In re Jenkins ( 2023 )


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  •          IN THE SUPREME COURT OF
    CALIFORNIA
    In re JASMINE JENKINS
    on Habeas Corpus.
    S267391
    Second Appellate District, Division One
    B301638
    Los Angeles County Superior Court
    BA467828
    March 27, 2023
    Chief Justice Guerrero authored the opinion of the Court, in
    which Justices Corrigan, Liu, Kruger, Groban, Jenkins, and
    Evans concurred.
    In re JENKINS
    S267391
    Opinion of the Court by Guerrero, C. J.
    After a jury found her guilty of voluntary manslaughter,
    Jasmine Jenkins appealed and filed a petition for writ of habeas
    corpus in the Court of Appeal. In the writ petition, she claimed
    the prosecution had suppressed evidence at trial in violation of
    Brady v. Maryland (1963) 
    373 U.S. 83
     (Brady). Specifically,
    Jenkins alleged the People had suppressed evidence that the
    victim and a key witness had previously been prosecuted for
    aggravated assault arising from an incident that occurred
    12 years earlier, which Jenkins asserted would have supported
    her claim of self-defense. To support her allegations, Jenkins
    attached as an exhibit an appellate court opinion downloaded
    from LexisNexis that apparently referred to the prior
    prosecution.
    The Attorney General filed an informal response and,
    after the Court of Appeal issued an order to show cause,
    submitted a brief in support of his return, arguing Jenkins had
    failed to present sufficient evidence of the prior case forming the
    basis of her Brady claim. In particular, the Attorney General
    argued that the appellate opinion was “nothing but an apparent
    printout of an unspecified and unverified Internet source.”
    The Court of Appeal assumed the opinion from the prior
    case referred to the victim and the witness, but it concluded the
    evidence of prior prosecution was not material under Brady and
    denied Jenkins’s petition for writ of habeas corpus.
    1
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    Jenkins filed a petition for review in which she contended
    that it was appropriate to grant review because the Attorney
    General had violated her right to due process by suppressing the
    same evidence that formed the basis of her Brady claim. The
    Attorney General filed an answer stating he had no “obligation
    to provide additional evidence” pertaining to Jenkins’s petition
    for writ of habeas corpus. Specifically, the Attorney General
    maintained he had no constitutional, ethical, or procedural duty
    to disclose evidence of the alleged prior prosecution in response
    to Jenkins’s petition. We granted Jenkins’s petition for review
    on the limited issue of the Attorney General’s duties, if any, to
    disclose evidence in response to a habeas corpus petitioner’s
    Brady claim.
    We conclude that the Attorney General has both a
    constitutional and an ethical duty to disclose evidence in
    response to a petition for writ of habeas corpus alleging a Brady
    violation under certain specified circumstances. In addition, we
    conclude that the respondent to such a petition has a duty to
    disclose evidence forming the basis of the Brady claim under
    circumstances that we describe. We explain how these duties
    may be performed when, as in this case, the evidence forming
    the basis of the Brady claim in a petition for writ of habeas
    corpus is subject to statutory disclosure restrictions. Finally, we
    apply these conclusions in Jenkins’s case and reverse the
    judgment of the Court of Appeal and remand the matter to that
    court for further proceedings consistent with this opinion.
    2
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    I.
    A.
    At the time of the incident giving rise to her manslaughter
    conviction, Jenkins was dating Kayuan Mitchell.1 Victim
    Brittneeh Williams (Brittneeh)2 and Mitchell had a daughter
    together.
    One evening in January 2018, Mitchell and Brittneeh got
    into a fight during which Mitchell assaulted Brittneeh. Jenkins
    arrived at the scene of the fight and taunted Brittneeh. Mitchell
    got into Jenkins’s car and Jenkins started to drive away. After
    phoning her sister, Sade Williams (Sade), Brittneeh drove after
    Jenkins and Mitchell.
    During the car chase, Jenkins complied with Mitchell’s
    direction to pull into a gas station. Brittneeh also pulled into
    the gas station. Brittneeh came over to Jenkins’s car, shouted
    at Jenkins, and possibly punched her through an open window.
    Mitchell got out of Jenkins’s car and tried to restrain Brittneeh.
    As Mitchell and Brittneeh continued to fight, Jenkins
    exited her car with a large kitchen knife and became involved in
    the fight. Jenkins stabbed Brittneeh three times with the knife,
    killing her, just as Sade arrived at the scene. Sade testified that
    Jenkins stabbed Brittneeh while Mitchell held Brittneeh in a
    bear hug.
    1
    We provide a brief summary of facts leading to Jenkins’s
    conviction based on the Court of Appeal’s unpublished opinion
    in this matter. (People v. Jenkins (Jan. 22, 2021, B294747,
    B301638) [nonpub. opn.].)
    2
    Because the victim and a witness share the same last
    name, after introducing them, we use their first names when
    referring to them individually to avoid confusion.
    3
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    A jury acquitted Jenkins of murder but convicted her of
    voluntary manslaughter. The trial court sentenced her to
    11 years in prison.
    B.
    Jenkins appealed. While her appeal was pending, Jenkins
    filed a petition for writ of habeas corpus in the Court of Appeal.
    As relevant here, in her petition for writ of habeas corpus,
    Jenkins claimed that the trial prosecutor suppressed material
    exculpatory evidence in violation of her right to due process.
    Specifically, Jenkins alleged the prosecutor failed to disclose
    that the prosecutor’s office had, in 2006, successfully prosecuted
    Brittneeh and Sade for aggravated assault with hate crime and
    infliction of great bodily injury enhancements.3 As to Brittneeh,
    Jenkins maintained that evidence of Brittneeh’s prior
    commission of violence would have been admissible to
    demonstrate her character for violence and support Jenkins’s
    claim of self-defense. As to Sade, Jenkins contended that the
    suppressed evidence would have been admissible for
    impeachment purposes, both as evidence of prior acts of moral
    turpitude and as evidence that Sade had lied to the jury when
    she had testified at Jenkins’s trial that Brittneeh had never
    previously acted like a “bully.”
    Along with her petition, among other exhibits, Jenkins
    filed a declaration from her trial counsel supporting her
    contention that the prosecutor suppressed the evidence. In his
    declaration, trial counsel stated that Jenkins’s postconviction
    3
    Jenkins noted that the Los Angeles County District
    Attorney had prosecuted her case as well as the case allegedly
    involving Brittneeh and Sade.
    4
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    counsel had recently provided him with a Court of Appeal
    opinion that “describes how the Williams sisters, both Sade and
    Brittneeh, brutally attacked three people without provocation,
    leaving them injured and concussed.” Trial counsel stated, “I
    did not know anything about that case.”
    Attached to trial counsel’s declaration was the Court of
    Appeal opinion (People v. Emerald R. (Mar. 4, 2010, B196643)
    [nonpub. opn.] (Emerald R.)), which had been downloaded from
    LexisNexis. As discussed in the opinion, in the matter
    underlying the appeal in Emerald R., a juvenile court declared
    two minors, referred to as “Brit. W.” and “Sade W.,” along with
    several other minors, to be wards of the court. The juvenile
    court found the minors committed a series of aggravated
    assaults during an incident that occurred on Halloween night in
    2006. Specifically, the juvenile court found that Brit. W. and
    Sade W. each committed three assaults with force likely to
    produce great bodily injury and found true hate crime
    allegations regarding each assault. In addition, the juvenile
    court found that Brit. W. personally inflicted great bodily injury
    on two victims and that Sade W. personally inflicted great bodily
    injury on another victim.
    The Court of Appeal ordered Jenkins’s petition for writ of
    habeas corpus to be considered with her appeal, solicited an
    informal response to the petition, and permitted Jenkins to file
    a reply to the informal response.
    The Attorney General filed an informal response arguing
    that Jenkins had not stated a prima facie case for relief because
    she “offered no competent evidence that either [Brittneeh] or
    [Sade] suffered the adjudications [Jenkins] cite[d], . . . offer[ed]
    no evidence that the prosecutor failed to disclose them,
    5
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    and . . . ha[d] not demonstrated how these prior adjudications
    were material or favorable to her.”
    In support of the first argument, the Attorney General,
    citing People v. Duvall (1995) 
    9 Cal.4th 464
    , 474–475 (Duvall),
    stated in part: “Exhibit B, Attachment B[, the Emerald R.
    opinion,] is nothing but an apparent printout of an unspecified
    and unverified Internet source suggesting a direct appeal
    opinion in which minors ‘Brit W.’ and ‘Sade W.’ are listed as
    defendants, among others. Because [Jenkins] has not provided
    sufficient evidence to show Brittneeh or Sade were the minors
    named, she has already failed to show a prima facie case for
    relief.”
    In her reply to the informal response, Jenkins objected to
    the Attorney General’s refusal to acknowledge whether
    Brittneeh and Sade were among the wards in Emerald R.,
    stating in part: “[The Attorney General’s4] approach in this case
    is deeply concerning — perhaps even more concerning than the
    prosecutor’s failure to disclose this past case, which very well
    may have been inadvertent. Here, [Jenkins] alleged that the
    state suppressed evidence of Brittneeh’s prior assault. The state
    now will not say whether or not this is in fact true, but instead
    plays word games with the Court of Appeal’s opinion in that
    4
    Although Jenkins uses the word “respondent” it is clear
    here, and in several other places in her briefing below and in
    this court, that she intended to refer to respondent’s counsel, the
    Attorney General, rather than respondent, the Secretary of the
    Department of Corrections and Rehabilitation. (See fn. 25,
    post.) We have replaced the word “respondent” with “Attorney
    General” in those instances in which it is clear Jenkins intended
    to refer to the Attorney General.
    6
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    case, characterizing that opinion as ‘an apparent printout of an
    unspecified and unverified Internet source . . . .’
    “However, as the chief law enforcement officer of the state,
    [the Attorney General] has access to Brittneeh’s criminal
    history. (See Pen. Code, § 11105.) Moreover, [the Attorney
    General’s] own office handled the appeal in that case. (See
    Exh. B, Attachment B, p. 1.) [¶] . . . . [¶]
    “If anyone knows whether this case involves Brittneeh
    Williams — or someone else the same age, from the same
    county, who is named Brit. W., with a sister named Sade W.,
    who faced the same charges around the same time — it is [the
    Attorney General]. He should say so.”
    Jenkins added that any factual dispute as to whether
    Brittneeh and Sade were, in fact, two of the wards in Emerald R.
    was not a reason to deny the petition for writ of habeas corpus
    prior to the issuance of an order to show cause. She argued that
    the Court of Appeal instead “should issue an Order to Show
    Cause, obtain formal pleadings — where the state can admit or
    deny in a verified answer whether Brittneeh was or was not the
    defendant in the prior assault case that [the Attorney General’s]
    own office handled — and order an evidentiary hearing in the
    unlikely event that a factual dispute remains after respondent
    answers this allegation under penalty of perjury.”
    The Court of Appeal issued an order to show cause. The
    Attorney General filed a two-paragraph return on behalf of
    respondent that provided in relevant part: “Respondent alleges
    that [Jenkins] is not entitled to relief because the prosecutor did
    not violate Brady . . . by failing to disclose [Brittneeh’s] and
    [Sade’s] purported prior juvenile adjudications for an incident
    7
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    that occurred in 2006 because [the prosecutor] did not suppress
    such evidence and such evidence was not material . . . .”
    In a brief in support of the return, the Attorney General
    reiterated Jenkins had not demonstrated that either Brittneeh
    or Sade “were the minors in [Emerald R.],” repeating the
    argument first provided in the informal response that
    “Exhibit B, Attachment B is nothing but an apparent printout
    of an unspecified and unverified Internet source suggesting a
    direct appeal opinion in which minors ‘Brit W.’ and ‘Sade W.’ are
    listed as defendants, among others.” The Attorney General also
    argued that, even assuming Brittneeh and Sade were among the
    wards in Emerald R., Jenkins had not “shown that the
    prosecutor suppressed these prior adjudications.” Finally, the
    Attorney General argued, also in the alternative, that Jenkins
    had failed to show any of the allegedly suppressed evidence was
    material.
    In her traverse, Jenkins argued respondent had filed a
    “conclusory general denial” that “plead[ed] no other facts and
    denie[d] none of the numerous other facts pled in the [p]etition.”
    Jenkins noted that respondent’s brief in support of the return
    made clear that “respondent still questions whether [the
    Emerald R. case] even involved the Williams sisters.” Jenkins
    argued further that the deficient return made it difficult to
    “isolate any disputed facts which may require an evidentiary
    hearing.” In particular, with respect to the issue of whether
    Brittneeh and Sade were the wards in the Emerald R. case,
    Jenkins argued that respondent had failed its duty under
    Duvall to either admit or deny the allegations in the petition or
    to instead allege “ ‘(i) he or she has acted with due diligence;
    (ii) crucial information is not readily available; and (iii) that
    there is good reason to dispute certain alleged facts . . . .’ ”
    8
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    (Quoting Duvall, 
    supra,
     9 Cal.4th at p. 485.) Further, to the
    extent respondent could be understood to deny Jenkins’s
    allegation that Brittneeh and Sade were the wards in the
    Emerald R. case, she requested an evidentiary hearing on this
    factual dispute.
    Along with her traverse, Jenkins filed a brief that argued,
    “[L]est there be any real question as to whether this case
    involved someone other than the Williams sisters, petitioner is
    attaching to this Memorandum . . . a 2007 news article from the
    Long Beach Press Telegram . . . describing how teenaged ‘sisters
    Brittneeh and Sade Williams . . .’ and others were ‘convicted of
    assault’ for ‘beating three . . . women . . .’ on ‘Halloween night.’ ”
    Jenkins filed the quoted article as well as the Emerald R.
    opinion, this time downloaded from Westlaw. The newspaper
    article states that Brittneeh and Sade Williams were among the
    minors involved in an incident that appears to form the basis of
    the offenses described in the Emerald R. opinion.
    The Court of Appeal affirmed Jenkins’s manslaughter
    conviction and denied her petition for writ of habeas corpus.
    Regarding the petition for writ of habeas corpus, the Court of
    Appeal began its analysis by stating, “In 2006, the Williams
    sisters, both juveniles, were declared wards of the court due to
    their having committed three hate-crime assaults with force
    likely to produce great bodily injury. [Emerald R., supra,
    B196643.]” Following this statement, the Court of Appeal
    included a footnote that provides: “The juveniles in [Emerald
    R.], are referred to as ‘Brit. W.’ and ‘Sade W.’, which
    [r]espondent contends fails to establish they were the Williams
    sisters here. That is a fair point, but for present purposes we
    will assume Brit. W. and Sade W. were Brittneeh and Sade
    Williams.”
    9
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    The Court of Appeal explained that Jenkins contended the
    prosecutor violated her constitutional right to due process
    pursuant to Brady and its progeny by failing to disclose the
    adjudications before trial. According to the Court of Appeal,
    Jenkins maintained that had she known about the
    adjudications, she would have used them to demonstrate that
    Brittneeh was the aggressor in their fight, and to impeach
    Sade’s credibility.
    After assuming that the prosecutor should have disclosed
    the adjudications and that they would have been admissible at
    trial, the Court of Appeal concluded that Jenkins’s Brady claim
    failed because “there is no reasonable probability that disclosure
    of the 2006 adjudication[s] would have altered the outcome of
    trial.”
    C.
    Jenkins filed a petition for review of the Court of Appeal’s
    denial of the writ petition. The Attorney General filed an
    answer stating he had no “obligation to provide additional
    evidence confirming that Brittneeh and Sade had, in fact,
    suffered the prior juvenile adjudications.”
    We granted Jenkins’s petition for review and limited the
    issue to be briefed and argued to the following: “Where a habeas
    petitioner claims not to have received a fair trial because the
    District Attorney failed to disclose material evidence in violation
    of Brady . . . — and where the Attorney General has knowledge
    of, or is in actual or constructive possession of, such evidence —
    what duty, if any, does the Attorney General have to
    acknowledge or disclose that evidence to the petitioner? Would
    any such duty be triggered only upon issuance of an order to
    show cause?”
    10
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    II.
    Jenkins    claims   the   Attorney    General    cannot
    constitutionally or ethically suppress exculpatory evidence
    relevant to a habeas corpus petitioner’s Brady claim that the
    Attorney General knows, or reasonably should know, he
    possesses. She argues further that the Attorney General must
    disclose such evidence in his possession upon the filing of a
    habeas corpus petitioner’s verified allegations alleging its
    existence.
    We consider the Attorney General’s constitutional duty to
    disclose alleged Brady evidence in habeas corpus proceedings in
    part II.A., post, and his ethical duty to disclose such evidence in
    part II.B., post. In part II.C., post, we consider the duties of the
    respondent to a petition for writ of habeas corpus alleging a
    Brady claim that arise from the procedural law governing such
    petitions. In part II.D., post, we consider how the Attorney
    General and the respondent may carry out these duties in a
    case, such as this, in which the alleged Brady evidence consists
    of juvenile records subject to statutory disclosure restrictions.
    Finally, in part II.E., post, we summarize our conclusions and
    apply them to Jenkins’s case.
    A.
    Jenkins contends the due process clause of the Fourteenth
    Amendment to the federal Constitution prohibits the Attorney
    General from defending a Brady claim by “[s]uppressing the
    [s]ame [e]vidence the [trial] [p]rosecutor [s]uppressed.”5
    5
    Jenkins also contends in summary fashion, “Even [i]f the
    Attorney General [m]ay [s]uppress [e]vidence under the
    11
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    “The Fourteenth Amendment to the federal Constitution
    prohibits states from denying any person due process of law.
    This guarantee of due process affords criminal defendants the
    right to a fair trial, ‘impos[ing] on States certain duties
    consistent with their sovereign obligation to ensure “that ‘justice
    shall be done.’ ” ’ ” (Association for Los Angeles Deputy Sheriffs
    v. Superior Court (2019) 
    8 Cal.5th 28
    , 39 (Deputy Sheriffs),
    quoting Cone v. Bell (2009) 
    556 U.S. 449
    , 451 (Cone).)
    “Prosecutors, as agents of the sovereign, must honor these
    obligations.” (Deputy Sheriffs, 
    supra,
     8 Cal.5th at p. 39.) “ ‘A
    prosecutor is held to a standard higher than that imposed on
    other attorneys because of the unique function he or she
    performs in representing the interests, and in exercising the
    sovereign power, of the state.’ ” (People v. Hill (1998) 
    17 Cal.4th 800
    , 820; accord, Banks v. Dretke (2004) 
    540 U.S. 668
    , 696
    (Banks) [“We have several times underscored the ‘special role
    played by the American prosecutor in the search for truth in
    criminal trials’ ”].)
    One special obligation that a prosecutor bears under our
    system pertains to the disclosure of evidence favorable to a
    defendant. That duty “trace[s] its origins to early 20th-century
    strictures against misrepresentation and is of course most
    prominently associated with [the United States Supreme]
    Court’s decision in Brady . . . .” (Kyles v. Whitley (1995) 
    514 U.S. 419
    , 432 (Kyles).) “Under Brady, 
    supra,
     
    373 U.S. 83
    , and its
    [f]ederal Constitution . . . this [c]ourt [s]hould [b]ar [s]uch
    [c]onduct under the Due Process Clause of the [s]tate
    Constitution.” However, Jenkins fails to develop her state
    constitutional argument, and we decline to address any such
    contention here. (See People v. Guzman (2019) 
    8 Cal.5th 673
    ,
    683, fn. 7.)
    12
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    progeny, the prosecution has a constitutional duty to disclose to
    the defense material exculpatory evidence, including potential
    impeaching evidence.” (People v. Superior Court (Johnson)
    (2015) 
    61 Cal.4th 696
    , 709 (Johnson).) “ ‘The obligation is not
    limited to evidence the prosecutor’s office itself actually knows
    of or possesses, but includes “evidence known to the others
    acting on the government’s behalf in the case, including
    the police.” ’ ” (People v. Cordova (2015) 
    62 Cal.4th 104
    , 123
    (Cordova).)
    We have not previously had occasion to consider the
    Attorney General’s duty, if any, under Brady and its progeny to
    disclose evidence forming the basis of a habeas corpus
    petitioner’s Brady clam. However, numerous courts in other
    jurisdictions “have held that when state investigators or
    prosecuting officers know of favorable evidence before or during
    a defendant’s trial, the State’s duty to disclose the evidence
    continues to posttrial proceedings that are determinative of
    guilt or innocence.” (State v. Harris (Neb. 2017) 
    893 N.W.2d 440
    ,
    454 (Harris); see, e.g., Whitlock v. Brueggemann (7th Cir. 2012)
    
    682 F.3d 567
    , 588 (Whitlock) [“As we explained at length before,
    Brady and its progeny impose an obligation on state actors to
    disclose exculpatory evidence that is discovered before or during
    trial. See [Steidl v. Fermon (7th Cir. 2007)] 494 F.3d [623,] 627–
    630. This obligation does not cease to exist at the moment of
    conviction”]; High v. Head (11th Cir. 2000) 
    209 F.3d 1257
    , 1264,
    fn. 8 [“The fact that the State had not provided High’s trial
    counsel with the audiotape does not dictate that the State would
    not have given the audiotape to his first habeas counsel if he had
    made a specific request for that item. The State’s duty to
    disclose exculpatory material is ongoing”]; Thomas v. Goldsmith
    (9th Cir. 1992) 
    979 F.2d 746
    , 749–750 [“We do not refer to the
    13
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    state’s past duty to turn over exculpatory evidence at trial, but
    to its present duty to turn over exculpatory evidence relevant to
    the instant habeas corpus proceeding”]; Blumberg v. Garcia
    (C.D.Cal. 2009) 
    687 F.Supp.2d 1074
    , 1135 [“The prosecution’s
    duty under Brady is a continuing one that extends through
    habeas proceedings”]; Canion v. Cole (Ariz. 2005) 
    115 P.3d 1261
    ,
    1262 [the state has a continuing Brady duty to disclose evidence
    that “comes to its attention” after sentencing]; see also
    Runningeagle v. Ryan (9th Cir. 2012) 
    686 F.3d 758
    , 772, fn. 6
    [citing Canion].)
    The Seventh Circuit’s decision in Steidl v. Fermon, supra,
    
    494 F.3d 623
     (Steidl) is particularly instructive. In Steidl, a
    former prisoner brought a suit under section 1983 of title 42 of
    the United States Code against several Illinois state police
    officials for violating his constitutional rights under Brady.6
    (Steidl, at p. 625.) The defendants were not involved in Steidl’s
    case prior to his conviction. (Ibid.) However, while Steidl’s
    postconviction proceeding was pending, the defendants learned
    of certain exculpatory evidence that the government had
    possessed prior to the time of trial. (Ibid.) Notwithstanding this
    knowledge, the defendants failed to disclose the evidence.
    (Ibid.) After his release, Steidl brought a claim in which he
    contended that the defendants’ act in “conceal[ing] exculpatory
    evidence from the courts during his post-conviction proceedings”
    6
    Steidl filed suit against several other defendants in
    addition to the Illinois State Police officials. (See Steidl, 
    supra,
    494 F.3d at p. 626.) However, these other defendants were not
    parties to the Steidl appeal. (Ibid.) Thus, for ease of reference
    we refer to the Illinois State Police officials as defendants.
    14
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    deprived him of a fair trial and led to his wrongful conviction.
    (Ibid.)
    After the district court denied the defendants’ motion to
    dismiss based on qualified immunity, they filed an interlocutory
    appeal. (Steidl, 
    supra,
     494 F.3d at p. 625.) On appeal, the Steidl
    court “agree[d] with the district court that the Brady line of
    cases has clearly established a defendant’s right to be informed
    about exculpatory evidence throughout the proceedings,
    including appeals and authorized post-conviction procedures,
    when that exculpatory evidence was known to the state at the
    time of the original trial.” (Ibid.) The Steidl court reasoned in
    part: “In our view, Brady, Ritchie,[7] and the other cases in this
    line impose on the state an ongoing duty to disclose exculpatory
    information if, as Brady put it, that evidence is material either
    to guilt or to punishment and available for the trial. . . . For
    evidence known to the state at the time of the trial, the duty to
    disclose extends throughout the legal proceedings that may
    affect either guilt or punishment, including post-conviction
    proceedings. Put differently, the taint on the trial that took
    place continues throughout the proceedings, and thus the duty
    to disclose and allow correction of that taint continues. We
    cannot accept the implicit premise of the state’s position here,
    which is that Brady leaves state officials free to conceal evidence
    from reviewing courts or post-conviction courts with impunity,
    even if that concealment results in the wrongful conviction of an
    7
    In Ritchie, which we discuss in greater detail in part II.D.,
    post, the United States Supreme Court stated that a state’s
    “duty to disclose [under Brady] is ongoing; information that may
    be deemed immaterial upon original examination may become
    important as the proceedings progress.” (Pennsylvania v.
    Ritchie (1987) 
    480 U.S. 39
    , 60, italics added (Ritchie).)
    15
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    innocent person. It is worth recalling, in this connection, that
    the Brady rule was derived from the Due Process Clause of the
    Fourteenth Amendment. ‘Society wins,’ the Court wrote, ‘not
    only when the guilty are convicted but when criminal trials are
    fair; our system of the administration of justice suffers when any
    accused is treated unfairly.’ [Brady, supra,] 
    373 U.S. at 87
    .”
    (Steidl, at p. 630.)
    We find the Steidl court’s reasoning persuasive and
    consistent with the principles underlying Brady and its progeny
    that we outlined ante, as well as case law referring to the
    government’s obligations under Brady in the postconviction
    context.
    Further, we note that Steidl may not be distinguished on
    the ground that it involved a police officer’s duty under Brady,
    while, in this case, we consider the duty of the Attorney General.
    As the Steidl court explained, it is the government who
    ultimately is obligated to comply with the disclosure
    requirements imposed by Brady and its progeny. (Steidl, supra,
    494 F.3d at pp. 630–631, citing Youngblood v. West Virginia
    (2006) 
    547 U.S. 867
    , 869–870; accord, Johnson, 
    supra,
    61 Cal.4th at p. 716 [“ ‘suppression by the Government is a
    necessary element of a Brady claim’ ” (italics added)]; People v.
    Williams (2013) 
    58 Cal.4th 197
    , 256, quoting Kyles, 
    supra,
    514 U.S. at p. 434 [“ ‘A “reasonable probability” of a different
    result is accordingly shown when the government’s evidentiary
    suppression “undermines confidence in the outcome of the
    trial” ’ ” (italics added)].) And, of course, the Attorney General
    acts on behalf of the government. (See Cal. Const., art. V, § 13
    [“the Attorney General shall be the chief law officer of the State.
    It shall be the duty of the Attorney General to see that the laws
    of the State are uniformly and adequately enforced”].)
    16
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    The Attorney General offers several arguments to support
    the contention that he does not have a duty to disclose evidence
    under Brady in the postconviction context. We consider each in
    turn. First, the Attorney General argues that “[t]here is no due
    process requirement that compels the Attorney General to
    disclose alleged Brady evidence at the outset of habeas litigation
    merely because a habeas petition raises a Brady claim.” We
    agree with the Attorney General insofar as he argues that a
    petitioner’s allegations of a Brady violation do not determine the
    existence of the Attorney General’s Brady duties.8 Where the
    evidence underlying a Brady habeas corpus claim would not
    have been subject to disclosure by the government prior to
    conviction — because, for example, such evidence was not
    favorable to the defendant and material — then the Attorney
    General has no Brady duty to disclose the evidence in
    postconviction proceedings.
    However, just like a prosecutor at trial, it is also true that
    the Attorney General’s determination as to whether the evidence
    is subject to disclosure under Brady also is not dispositive as to
    the existence of a constitutional duty. Therefore, it may be the
    case that the Attorney General “disclose[s] a favorable piece of
    evidence” in a case in which it is unclear whether Brady
    mandates disclosure. (Kyles, supra, 514 U.S. at p. 439; see
    Deputy Sheriffs, 
    supra,
     8 Cal.5th at p. 40.) “This is as it should
    be.” (Kyles, at p. 439.) Further, determining whether Brady
    8
    We note that while a petitioner’s allegations are not
    determinative of the Attorney General’s constitutional duty
    under Brady, such allegations do inform a respondent’s duties
    pursuant to our state’s habeas corpus procedures in filing a
    return to a petition for writ of habeas corpus alleging a Brady
    violation. (See part II.C., post.)
    17
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    applies to a piece of evidence may be easier in the postconviction
    context given that its materiality, or lack thereof, may be more
    apparent than it is before judgment. (Cf. Kyles, at pp. 438–439
    [recounting government’s argument that materiality is difficult
    to determine prior to judgment]; Deputy Sheriffs, at p. 40 [“it
    may be difficult to know before judgment what evidence will
    ultimately prove material”].)
    The Attorney General also broadly suggests he has no
    duty under Brady in the postconviction context, even if the
    evidence at issue was favorable to the defendant and material,
    was available at trial, and was suppressed. He argues that the
    purpose of Brady is to “safeguard . . . the right to a fair trial,”
    and that “[w]hen a trial is over, Brady’s disclosure command
    lacks purpose and dissipates.”
    We generally agree with the Attorney General’s
    assessment of Brady’s purpose. But we disagree that relieving
    him of the disclosure requirements of Brady — in the context of
    a habeas corpus proceeding — serves that purpose.                 To
    understand why, we review the purpose of our state’s habeas
    corpus proceedings: “The California Constitution has protected
    the right to seek relief by habeas corpus since our state’s
    founding. [Citations.] Habeas corpus, we have explained, ‘often
    represents a prisoner’s last chance to obtain judicial review’ of a
    criminal conviction. [Citation.] The law preserves this avenue
    to relief in service of principles of substantial justice: ‘ “Despite
    the substantive and procedural protections afforded those
    accused of committing crimes, the basic charters governing our
    society wisely hold open a final possibility for prisoners to prove
    their convictions were obtained unjustly.” ’ ” (In re Friend
    (2021) 
    11 Cal.5th 720
    , 736 (Friend).)
    18
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    The postconviction Brady obligation that we outline today
    supports the right to a fair trial and is fully compatible with the
    purpose of habeas corpus proceedings. Under Brady and its
    progeny, securing a conviction by failing to disclose material
    exculpatory evidence violates due process. (Brady, supra,
    373 U.S. at p. 86; Johnson, 
    supra,
     61 Cal.4th at pp. 709–710.)
    Imposing a continuing duty of disclosure on the government in
    this context is consistent with both the due process right on
    which Brady is based, and the “principles of substantial justice”
    on which our state’s long-standing habeas corpus tradition is
    founded. (Friend, supra, 11 Cal.5th at p. 736.)
    The Attorney General also contends that, “It would be
    incongruous to graft Brady, a trial principle of constitutional
    criminal procedure, onto a postconviction civil proceeding with
    its own comprehensive procedural structure.” While it is true
    that “[a] habeas corpus proceeding is not a criminal action”
    (Maas v. Superior Court (2016) 
    1 Cal.5th 962
    , 975), and may be
    characterized as “ ‘civil in nature’ ” for some purposes (Briggs v.
    Brown (2017) 
    3 Cal.5th 808
    , 838), we have generally refrained
    from deciding “ ‘whether a habeas corpus proceeding is civil or
    criminal,’ ” noting that “ ‘[i]t is a special proceeding and not
    entirely analogous to either category.’ ” (Id. at p. 838, fn. 15,
    quoting In re Scott (2003) 
    29 Cal.4th 783
    , 815, fn. 6 (Scott); see
    also Maas, at p. 975, citing Pen. Code, pt. 2, tit. 12, ch. 1, § 1473
    et seq. [“the Legislature likewise . . . labeled the habeas corpus
    proceeding a ‘Special Proceeding [] of a Criminal Nature’ ”].)9 In
    any event, we see nothing incongruous about applying a rule
    designed to ensure that convictions are premised on due process
    9
    Unless otherwise specified, all subsequent statutory
    references are to the Penal Code.
    19
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    to a procedure designed to “ ‘ “hold open a final possibility for
    prisoners to prove their convictions were obtained unjustly.” ’ ”
    (Friend, supra, 11 Cal.5th at p. 736.)
    Nor does the Attorney General cite any case from this
    court, or any other, holding that the government, in
    postconviction proceedings, lacks a duty to disclose Brady
    material that was available to the government at the time of
    trial. The primary authority the Attorney General relies on,
    District Attorney’s Office for Third Judicial Dist. v. Osborne
    (2009) 
    557 U.S. 52
     (Osborne), does not support the Attorney
    General’s position. The defendant in Osborne sued Alaska
    officials in federal court alleging a violation of section 1983 of
    title 42 of the United States Code based, in part, on his claim
    that the due process clause gave him the right to access DNA
    evidence that “had been unavailable at trial.” (Osborne, at p. 61,
    italics added.) In considering whether the defendant had such
    a constitutional right “to obtain postconviction access to the
    State’s evidence for DNA testing” (ibid.), the Osborne court
    observed that “[t]he availability of technologies not available at
    trial cannot mean that every criminal conviction, or even every
    criminal conviction involving biological evidence, is suddenly in
    doubt.” (Id. at p. 62, italics added.) The Osborne court reasoned
    further that “[t]he dilemma [of] how to harness DNA’s power to
    prove innocence without unnecessarily overthrowing the
    established system of criminal justice,” was a problem to be
    solved “primarily [by] the legislature.” (Ibid.)
    The Osborne court acknowledged that the defendant had
    “a liberty interest in demonstrating his innocence with new
    evidence under state law.” (Osborne, 
    supra,
     557 U.S. at p. 68.)
    After discussing that state law, the Osborne court observed that
    a “ ‘state-created right can, in some circumstances, beget yet
    20
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    other rights to procedures essential to the realization of the
    parent right.’ ” (Ibid.) However, the Osborne court concluded
    that the Ninth Circuit “went too far . . . in concluding that the
    Due Process Clause requires that certain familiar preconviction
    trial rights be extended to protect Osborne’s postconviction
    liberty interest.” (Ibid.) The Supreme Court explained that,
    unlike before trial when a defendant is entitled to the
    presumption of innocence, “[t]he State . . . has more flexibility in
    deciding what procedures are needed in the context of
    postconviction relief. ‘[W]hen a State chooses to offer help to
    those seeking relief from convictions,’ due process does not
    ‘dictat[e] the exact form such assistance must assume.’
    [Citation.] Osborne’s right to due process is not parallel to a
    trial right, but rather must be analyzed in light of the fact that
    he has already been found guilty at a fair trial, and has only a
    limited interest in postconviction relief. Brady is the wrong
    framework.” (Id. at p. 69.)
    While Osborne certainly “distinguish[es] between the
    pretrial and the posttrial obligation to provide exculpatory
    evidence” (Barnett v. Superior Court (2010) 
    50 Cal.4th 890
    , 906
    (Barnett)), we do not understand Osborne as holding that the
    government lacks a duty to disclose, in the postconviction
    context, Brady evidence that was available prior to conviction.
    It is notable that Osborne repeatedly stated the evidence at
    issue in that case was unavailable at trial (see Osborne, 
    supra,
    557 U.S. at pp. 61, 62), unlike the present case. And the Osborne
    court’s reason for declining to extend Brady to evidence
    discovered in the postconviction context — namely, that the
    defendant received “a fair trial” (id. at pp. 68, 69), also does not
    apply where the prosecution violates Brady at trial. (See, e.g.,
    Cone, 
    supra,
     556 U.S. at pp. 459, 472 [determining that evidence
    21
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    that had been “withheld from [the defendant] at trial” “deprived
    [him] of his right to a fair trial”].)
    Other courts have similarly understood Osborne. In
    Whitlock, 
    supra,
     
    682 F.3d 567
    , the Seventh Circuit found no
    inconsistency between Osborne and its earlier conclusion in
    Steidl that a defendant has a “ ‘right to be informed about
    exculpatory evidence throughout the proceedings, including
    appeals and authorized post-conviction procedures, when that
    exculpatory evidence was known to the state at the time of the
    original trial.’ ” (Id. at p. 587, quoting Steidl, supra, 494 F.3d at
    p. 625.) The Whitlock court explained that the defendant police
    officials “read Osborne too broadly. Osborne rejected a claim
    that Alaska’s procedures governing the access of defendants to
    post-conviction DNA testing violated due process. Critically, the
    evidence that Osborne sought was not exculpatory evidence that
    had been in existence at the time of his original trial. Instead,
    he was seeking the opportunity to collect and submit entirely
    new, and he hoped exculpatory, evidence. The Court rejected
    the argument that Brady required the state to allow the
    defendant access to these new tests because the defendant had
    already been ‘proved guilty after a fair trial.’ [Citation.] But
    Brady continues to apply to an assertion that one did not receive
    a fair trial because of the concealment of exculpatory evidence
    known and in existence at the time of that trial.” (Whitlock, at
    pp. 587–588.)
    The Whitlock court noted further that the Steidl court
    decided only whether the government’s Brady duty applied to
    evidence “known and in existence at the time of that trial”
    (Whitlock, supra, 682 F.3d at p. 588), and that it did not decide
    whether Brady applied to “ ‘evidence discovered post-trial.’ ”
    (Ibid., quoting Steidl, 
    supra,
     494 F.3d at p. 629; see also Steidl,
    22
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    at p. 630 [stating that “available for the trial” “qualification is
    important, to the extent that Brady identifies a trial right”].)
    Thus, while in Osborne the Supreme Court concluded a
    defendant has no Brady “right to have the State disclose
    exculpatory evidence that it learns about after a final judgment”
    (Harris, supra, 893 N.W.2d at p. 457, italics added), Osborne
    does not stand for the proposition that the Attorney General
    may constitutionally continue to suppress material exculpatory
    evidence in habeas corpus proceedings that was suppressed by
    a prosecutor at the time of trial. (Whitlock, at p. 587; see also
    Thompson v. City of Chicago (7th Cir. 2013) 
    722 F.3d 963
    , 972
    [following Whitlock]; Collins v. City of New York (E.D.N.Y. 2013)
    
    923 F.Supp.2d 462
    , 474 [“In Osborne, 
    [supra,
     557 U.S. at
    pages 68–69,] the Supreme Court held that Brady does not
    require disclosure of exculpatory evidence — such as DNA
    testing — that was or could be created after trial. [Citation.]
    Since Collins’s Brady claim involves nondisclosure of evidence
    in existence at the time of trial, Osborne does not apply”].) In
    sum, as was true of the police official defendants in Whitlock, we
    similarly conclude that the Attorney General reads Osborne too
    broadly.
    Nor are we persuaded by the Attorney General’s argument
    that     “regardless      of    the    applicability    of    Brady
    postconviction, . . . logic and practicality” dictate that there can
    be no ongoing Brady violation once a petitioner files a petition
    for writ of habeas corpus claiming a Brady violation. As for
    logic, the Attorney General reasons, “The very allegation that
    given information was suppressed means that the petitioner is
    now aware of the evidence, which is no longer suppressed.” This
    contention is unpersuasive because the mere assertion of a
    Brady claim does not always demonstrate the petitioner has
    23
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    sufficient direct or concrete evidence to support the allegations.
    Often it is through habeas corpus proceedings, that such
    evidence is revealed. (See, e.g., Banks, 
    supra,
     540 U.S. at
    pp. 682, 685 [noting that the petitioner alleged in a habeas
    corpus proceeding “ ‘upon information and belief’ ” that
    prosecution failed to disclose witness’s identity as an informant,
    and that, several years later, in a habeas corpus evidentiary
    hearing, a deputy sheriff “acknowledged, for the first time, that
    [the witness] was an informant”]; In re Bacigalupo (2012)
    
    55 Cal.4th 312
    , 316 [describing reference proceeding that
    spanned “several hearings over a three-year period,” and during
    which “17 witnesses were called” to determine whether
    prosecution failed to disclose information it obtained from a
    confidential informant].) In addition, the mere assertion of a
    Brady claim in a habeas corpus proceeding does not necessarily
    provide a sufficient evidentiary record for a court to resolve such
    claim. (See, e.g., Pham v. Terhune (9th Cir. 2005) 
    400 F.3d 740
    ,
    743 [ordering discovery of laboratory notes forming the basis of
    a Brady claim and stating “[o]nce [the] notes have been
    disclosed, the Brady issue is for the district court to decide in the
    first instance”].)
    The Attorney General’s “practicality” argument is
    similarly unpersuasive. The fact that, as the Attorney General
    argues, the petitioner “knows enough to seek [the evidence]”
    does not provide any assurance that the evidence will be
    revealed given that, as the Attorney General acknowledges, “a
    24
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    convicted person enjoys few opportunities to seek postconviction
    discovery by court order.”10
    In sum, we conclude that where a habeas corpus petitioner
    claims not to have received a fair trial because a trial prosecutor
    failed to disclose material evidence in violation of Brady — and
    where the Attorney General has knowledge of, or is in actual or
    constructive possession of, evidence that the trial prosecutor
    10
    While section 1054.9 authorizes postconviction discovery
    in certain cases, the statute does not apply to petitioner given her
    11-year sentence. (§ 1054.9, subd. (a) [allowing postconviction
    discovery in cases involving a criminal conviction of a serious
    felony or a violent felony resulting in a sentence of 15 years or
    more].) Thus, we express no opinion regarding the Attorney
    General’s postconviction statutory discovery duties under
    section 1054.9 or court-ordered discovery following an order to
    show cause. (See Scott, 
    supra,
     29 Cal.4th at p. 813 [after order
    to show cause issues, the “scope of discovery in habeas corpus
    proceedings has generally been resolved on a case-by-case
    basis”].)
    We also express no opinion regarding the Attorney
    General’s duty in a hypothetical situation described in his brief,
    “in which no petition for a writ of habeas corpus has been filed
    alleging a Brady violation but the Attorney General becomes
    aware of evidence that should have been disclosed at trial
    pursuant to Brady.”
    25
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    suppressed in violation of Brady11 — the Attorney General has
    a constitutional duty under Brady to disclose the evidence.12
    B.
    Jenkins claims the “[e]thics [r]ules [a]lso [p]rohibit the
    Attorney General from [s]uppressing [e]vidence.”
    Rule 3.8 of the Rules of Professional Conduct (Rule 3.8)
    provides in relevant part: “The prosecutor in a criminal case
    11
    At oral argument, the Attorney General acknowledged the
    potential constitutional dimension to his disclosure duties in the
    habeas corpus context, stating, for example, that “there may
    well be some due process . . . based obligation to
    disclose . . . evidence” where a district attorney fails to turn over
    Brady material. The Attorney General also stated, “[W]e are not
    denying that there may be a constitutional imperative behind
    this obligation.”
    However, the Attorney General expressed skepticism as to
    the applicability of the Brady right in the postconviction context
    because, according to the Attorney General, the postconviction
    context varies considerably from that which exists prior to
    conviction. Specifically, the Attorney General argued that while
    Brady obligates the prosecutor to proactively disclose
    information to further the factfinding function of a trial, “when
    a habeas claim is filed it is not for the purpose of investigating
    potential violations.” We emphasize the Brady duty we
    recognize in this opinion is limited to circumstances in which the
    Attorney General has knowledge of, or is in actual or
    constructive possession of, allegedly suppressed evidence that is
    referenced in a petition for writ of habeas corpus. Given our
    disposition remanding the case to the Court of Appeal for
    further proceedings, we find it unnecessary to consider what
    circumstances would demonstrate constructive possession in
    this context.
    12
    In part II.D., post, we discuss how the Attorney General
    may comply with his disclosure obligations in a case in which
    the alleged Brady material is subject to confidentiality
    provisions under Welfare and Institutions Code section 827.
    26
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    shall: [¶] . . . [¶] (d) make timely disclosure to the defense of all
    evidence or information known to the prosecutor that the
    prosecutor knows or reasonably should know tends to negate the
    guilt of the accused, mitigate the offense, or mitigate the
    sentence, except when the prosecutor is relieved of this
    responsibility by a protective order of the tribunal.”
    We have not previously had occasion to consider the
    Attorney General’s ethical duty, if any, pursuant to Rule 3.8(d)
    in postconviction proceedings generally and thus have not
    considered his duty as it pertains to a habeas corpus proceeding
    alleging a Brady violation.13 The Attorney General argues both
    that the rule has no application “in any postconviction scenario,”
    and that Rule 3.8(d) should not “be viewed as imposing a duty
    of disclosure independent of settled habeas procedures . . . .” We
    disagree with both contentions.
    As to whether Rule 3.8(d) applies in postconviction
    settings, case law describing a prosecutor’s ethical duties in the
    postconviction context decided before Rule 3.8(d) was adopted
    supports such application.        Specifically, this court has
    repeatedly recognized that prosecutors have a continuing duty
    13
    “In 2018, [this court] approved a comprehensive revision
    of the California Rules of Professional Conduct, effective
    November 1, 2018. The new rules replace the former rules, and
    implement a decimal numbering and organizational system
    based on the American Bar Association Model Rules of
    Professional Conduct.” (Davis v. TWC Dealer Group, Inc. (2019)
    
    41 Cal.App.5th 662
    , 677.) Rule 3.8 became effective as part of
    this revision.
    This court had previously entered an order enacting a rule
    of professional conduct, operative November 2, 2017, identical
    in all material respects to Rule 3.8(d), as an amendment to
    former rule 5-110 of the Rules of Professional Conduct.
    27
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    in postconviction proceedings to disclose exculpatory evidence
    that should have been disclosed at trial. In People v. Gonzalez
    (1990) 
    51 Cal.3d 1179
     (Gonzalez), after concluding that a trial
    court had erred in ordering the Attorney General, among others,
    to provide certain discovery to a defendant in the postconviction
    setting (see 
    id.
     at pp. 1256–1257), we stated: “Of course, the
    prosecution has a well-established duty to disclose information
    materially favorable to the defense, even absent a request
    therefor. [Citations.] ‘. . . At trial this duty is enforced by the
    requirements of due process, but [even] after a conviction the
    prosecutor . . . is bound by the ethics of his office to inform the
    appropriate authority of . . . information that casts doubt upon
    the correctness of the conviction.’ [Citation]; see also rule 5-220,
    Rules Prof. Conduct of State Bar;[14] ABA Model Code Prof.
    Responsibility, DR 7-103 (B), EC 7-13; ABA Model Rules Prof.
    Conduct, rule 3.8(d).) [¶] We expect and assume that if the
    People’s lawyers have such information in this or any other case,
    they will disclose it promptly and fully.” (Id. at pp. 1260–1261.)
    In In re Steele (2004) 
    32 Cal.4th 682
    , we noted the
    Attorney General argued that the fact that prosecutors have a
    continuing ethical duty to disclose exculpatory evidence
    obviated the need to interpret section 1054.9 as providing for the
    postconviction discovery of such evidence: “The Attorney
    General also argues that, as we pointed out in People v.
    Gonzalez, supra, 51 Cal.3d at pages 1260 and 1261, prosecutors
    have a continuing duty to disclose information favorable to the
    14
    Former rule 5-220 of the Rules of Professional Conduct
    provided, “A member shall not suppress any evidence that the
    member or the member’s client has a legal obligation to reveal
    or to produce.”
    28
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    defense, and we expect and assume that they will perform this
    duty promptly and fully, and, moreover, that ‘[i]t is presumed
    that official duty has been regularly performed.’ (Evid. Code,
    § 664.)      Accordingly, he urges, any interpretation of
    section 1054.9 that extends to discovery the prosecution should
    have provided at time of trial makes it redundant of other law.
    However, the expectation and assumption we stated in Gonzalez
    merely mean that normally, and unless the defendant
    overcomes Evidence Code section 664’s presumption as to
    specific evidence, there will be no discovery for the trial court to
    order that the prosecutor should have provided at trial.” (In re
    Steele, at p. 694.)
    Finally, in In re Lawley (2008) 
    42 Cal.4th 1231
     (In re
    Lawley), we repeated our admonition from Gonzalez concerning
    the continuing ethical duties of a prosecutor — in the
    postconviction setting — to disclose evidence that should have
    been disclosed at trial, this time specifically quoting American
    Bar Association Model Rules of Professional Conduct, rule 3.8(d)
    (ABA Model Rule 3.8(d)) as providing, “ ‘The prosecutor in a
    criminal case shall: [¶] . . . [¶] (d) make timely disclosure to the
    defense of all evidence or information known to the prosecutor
    that tends to negate the guilt of the accused or mitigates the
    offense.’ ” (In re Lawley, at p. 1246; see 
    ibid.
     [“Before and during
    trial, due process requires the prosecution to disclose to the
    defense evidence that is material and exculpatory. [Citations.]
    This obligation continues after trial.” (Citing, inter alia, ABA
    Model Rule 3.8(d))].)
    Gonzalez, In re Steele, and In re Lawley all were decided
    during a period when California did not have a specific rule of
    professional conduct mandating that a prosecutor disclose
    exculpatory evidence. Even without a specific rule, this court
    29
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    repeatedly stated that a prosecutor had an ethical duty to
    disclose exculpatory evidence in the postconviction setting.
    Indeed, in both Gonzalez, supra, 51 Cal.3d at pages 1260–1261
    and In re Lawley, 
    supra,
     42 Cal.4th at page 1246, we relied on
    ABA Model Rule 3.8(d) in noting the existence of such a duty.
    With the adoption of Rule 3.8(d), California now has a
    specific rule of professional conduct mandating the disclosure of
    exculpatory evidence by prosecutors. The adoption of a rule of
    professional conduct that is based in part on ABA Model
    Rule 3.8(d) — which this court has repeatedly relied on in
    concluding that prosecutors have a disclosure obligation in the
    postconviction context — supports our conclusion that
    Rule 3.8(d) similarly applies in postconviction settings.
    The Attorney General argues that the “language [of
    Rule 3.8(d)] suggests exclusively pretrial application.” We are
    not persuaded. The text of Rule 3.8(d) contains no language
    expressly limiting its application to proceedings prior to
    conviction. Nor do we infer any limitation based on the language
    cited by the Attorney General. The Attorney General notes that
    Rule 3.8(d) refers to “the accused” (Rule 3.8(d)), a description the
    Attorney General contends is inapt when referring to a
    convicted defendant. Similarly, the Attorney General notes that
    Rule 3.8(d) refers to the “defense,” a description that technically
    does not apply to a petitioner in a habeas corpus proceeding.
    The Attorney General’s textual arguments ascribe too much
    significance to terms we take to be shorthand references to a
    person who is, or who has been, the subject of criminal
    30
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    proceedings and to that person’s lawyer(s).15 (Cf. People v.
    Superior Court (Pearson) (2010) 
    48 Cal.4th 564
    , 573 [rejecting
    district attorney’s argument that “the Legislature’s use of the
    word ‘defendant’ rather than ‘petitioner’ in section 1054.9,”
    demonstrated that the Legislature was not “creat[ing] discovery
    in a separate habeas corpus matter”].) Further, the Attorney
    General fails to cite any authority attaching import to the use of
    the terms “accused” or “the defense” in language derived from
    ABA Model Rule 3.8(d), a provision that we have previously
    found applicable in postconviction proceedings. (See In re
    Lawley, 
    supra,
     42 Cal.4th at p. 1246; cf. Com’n for Lawyer
    Discipline v. Hanna (Tex.Ct.App. 2016) 
    513 S.W.3d 175
    , 180–
    181 [stating “we hesitate to hold that the term ‘accused’
    standing alone is conclusive” while discussing Texas
    Disciplinary Rules of Professional Conduct, rule 3.09(d), which
    like Rule 3.8(d) “was modeled after [ABA Model] Rule 3.8(d)”].)
    We also reject the Attorney General’s contention that
    Rule 3.8(d) should not be interpreted to apply in postconviction
    proceedings because “ ‘timely’ ” disclosure “is no longer possible”
    in habeas corpus proceedings where guilt has been adjudicated.
    Timeliness must be measured in relation to the proceeding in
    which the disclosure is at issue. (See Rule 3.8, com. [3] [“A
    disclosure’s timeliness will vary with the circumstances”].)
    When applied to postconviction proceedings, Rule 3.8(d)’s
    requirement that the prosecutor “make timely disclosure” is
    15
    Although not specifically mentioned by the Attorney
    General, we have also considered that Rule 3.8 refers
    generically to a “prosecutor in a criminal case,” and does not
    specifically refer to the Attorney General in habeas corpus
    proceedings.
    31
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    reasonably interpreted as mandating timeliness in those
    proceedings.
    Nor are we persuaded by the Attorney General’s argument
    that “the inclusion of rules that expressly do apply
    postconviction” demonstrates that Rule 3.8(d) does not apply in
    this postconviction setting. (Italics added, citing Rule 3.8(f) &
    (g).)16 The fact that Rule 3.8(f) and (g) refer to a “convicted”
    defendant, while Rule 3.8(d) does not use that term, can be
    explained by the fact that Rule 3.8(f) and (g) apply exclusively to
    convicted defendants, while Rule 3.8(d) also applies prior to
    conviction.17
    16
    Rule 3.8(f) provides: “When a prosecutor knows of new,
    credible and material evidence creating a reasonable likelihood
    that a convicted defendant did not commit an offense of which
    the defendant was convicted, the prosecutor shall:
    “(1) promptly disclose that evidence to an appropriate court or
    authority, and
    “(2) if the conviction was obtained in the prosecutor’s
    jurisdiction,
    “(i) promptly disclose that evidence to the defendant unless a
    court authorizes delay, and
    “(ii) undertake further investigation, or make reasonable efforts
    to cause an investigation, to determine whether the defendant
    was convicted of an offense that the defendant did not commit.”
    Rule 3.8(g) provides: “When a prosecutor knows of clear
    and convincing evidence establishing that a defendant in the
    prosecutor’s jurisdiction was convicted of an offense that the
    defendant did not commit, the prosecutor shall seek to remedy
    the conviction.”
    17
    In addition, the paragraph of ABA Model Rule 3.8(d) from
    which Rule 3.8(d) was drawn was first adopted in 1977 (see
    Attorney Grievance v. Cassilly (Md.Ct.App. 2021) 
    262 A.3d 272
    ,
    32
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    Having determined that the Attorney General has an
    ethical duty pursuant to Rule 3.8(d) in postconviction settings,
    we consider the Attorney General’s argument that Rule 3.8(d)
    does not establish any additional “duty of disclosure” beyond
    that provided for by the law governing habeas corpus
    procedures. The Attorney General’s argument is based on
    comment [3] to Rule 3.8, which provides in part that Rule 3.8(d)
    should not be “applied in a manner inconsistent with statutory
    and constitutional provisions governing discovery in California
    courts.” This argument fails because even assuming that
    respondent’s duties that we describe in part II.C., post, are
    discovery provisions binding on the Attorney General,18 the
    Attorney General has not demonstrated how “imposing a duty
    of disclosure [pursuant to Rule 3.8(d)] independent of settled
    habeas procedures establishing a duty on the part of the
    311), while the paragraphs of the ABA Model Rule 3.8 from
    which Rule 3.8(f) and (g) were drawn were not adopted until
    2008. (See Cassilly, at p. 311.) The adoption of these provisions
    at different times provides a practical explanation for drafting
    terminology differences. (Cf. United Riggers & Erectors, Inc. v.
    Coast Iron & Steel Co. (2018) 
    4 Cal.5th 1082
    , 1093 [“Different
    bills, drafted by different authors, passed at different times,
    might well use different language to convey the same basic
    rule”].)
    18
    As a technical matter, the law governing petitions for writ
    of habeas corpus binds the respondent to such a petition — in
    this case, the Secretary of the Department of Corrections and
    Rehabilitation. (See fn. 25, post.) Rule 3.8(d) prescribes the
    ethical duties of respondent’s counsel, the Attorney General.
    Further, we are not convinced that the procedural duties we
    describe in part II.C., post, arising from our case law governing
    petitions for writ of habeas corpus, should be interpreted as
    “statutory . . . provisions governing discovery” within the
    meaning of comment [3] to Rule 3.8.
    33
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    Attorney General to acknowledge and potentially disclose the
    evidence at issue,” is inconsistent with those habeas corpus
    procedures. However, while we reject the Attorney General’s
    argument that comment [3] to Rule 3.8 limits his duty of
    disclosure to that prescribed in the procedural law governing
    habeas corpus proceedings, we do not suggest that Rule 3.8(d)
    imposes duties beyond those specified in statutory and
    constitutional provisions governing discovery in California
    courts.
    In fact, we note that the ethical duty in Rule 3.8(d) appears
    to be similar to the prosecutor’s statutory duty at trial to provide
    discovery of “ ‘[a]ny exculpatory evidence.’ ” (Cordova, supra,
    62 Cal.4th at p. 124, quoting § 1054.1, subd. (e).)19 That duty
    “requires the prosecution to provide all exculpatory evidence,
    not just evidence that is material under Brady and its progeny.”
    (Cordova, at p. 124; see also Barnett, 
    supra,
     50 Cal.4th at p. 901
    [for purposes of postconviction discovery under § 1054.9, “[i]f
    petitioner can show he has a reasonable basis for believing a
    specific item of exculpatory evidence exists, he is entitled to
    receive that evidence without additionally having to show its
    materiality”]; accord, Deputy Sheriffs, 
    supra,
     8 Cal.5th at p. 40
    [noting that “[s]tatutory and ethical obligations may require
    even more” than the disclosure of material evidence and citing
    § 1054.1, subds. (d)–(e) and Rule 3.8(d) & com. [3]].)
    19
    While it is unnecessary for us to decide whether the two
    duties are identical, we emphasize that nothing in this opinion
    should be understood to prescribe a duty of disclosure
    “inconsistent with statutory and constitutional provisions
    governing discovery in California courts.” (Rule 3.8, com. [3].)
    34
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    The Attorney General also appears to argue that the
    applicability of Rule 3.8(d) in habeas corpus proceedings raising
    a Brady claim turns on the Attorney General’s assessment of
    whether the evidence at issue is material to the petitioner’s
    conviction.20 We reject any such argument. Comment [3] to
    Rule 3.8 expressly states, “The disclosure obligations in
    paragraph (d) are not limited to evidence or information that is
    material as defined by Brady . . . and its progeny.” This court’s
    approval of Rule 3.8(d) and the accompanying comment makes
    clear that the ethical disclosure obligation under Rule 3.8(d) is
    not limited to evidence material to a conviction.
    Accordingly, we conclude that, pursuant to Rule 3.8(d), in
    responding to a petition for writ of habeas corpus alleging a
    Brady violation, the Attorney General has an ethical duty to
    make timely disclosure to the petitioner of all evidence or
    information known to the Attorney General that was available
    but not disclosed at trial21 that the Attorney General knows or
    reasonably should know tends to negate the guilt of the
    petitioner, mitigate the offense, or mitigate the sentence, except
    when the Attorney General is relieved of this responsibility by a
    protective order of the tribunal.22
    20
    In his answering brief, the Attorney General argues, “No
    ethical rule would have required the Attorney General in this
    case to disclose records the Attorney General did not consider
    material to the trial outcome.”
    21
    The parties have not briefed, and we do not consider,
    whether Rule 3.8(d) requires disclosure of evidence that was not
    available at trial.
    22
    The Attorney General also cites another portion of
    comment [3] to Rule 3.8, which provides that the rule “ ‘does not
    35
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    C.
    In addition to the Attorney General’s constitutional and
    ethical duties described in parts II.A. and II.B., ante, a
    respondent to a petition for writ of habeas corpus alleging a
    Brady claim also has duties that arise from procedural law
    governing such petitions.
    We begin by summarizing well established law governing
    petitions for writ of habeas corpus. (Duvall, 
    supra,
     9 Cal.4th at
    pp. 474–475.)      In Duvall, we outlined a habeas corpus
    petitioner’s initial pleading burden: “To satisfy the initial
    burden of pleading adequate grounds for relief, an application
    for habeas corpus must be made by petition, and ‘[i]f the
    imprisonment is alleged to be illegal, the petition must also state
    in what the alleged illegality consists.’ [Citation.] The petition
    should both (i) state fully and with particularity the facts on
    which relief is sought [citations], as well as (ii) include copies of
    reasonably available documentary evidence supporting the
    claim, including pertinent portions of trial transcripts and
    affidavits or declarations. [Citations.] ‘Conclusory allegations
    made without any explanation of the basis for the allegations do
    not warrant relief, let alone an evidentiary hearing.’ [Citation.]
    We presume the regularity of proceedings that resulted in a
    require disclosure of information protected from disclosure by
    federal or California laws and rules.’ ” Thus, the Attorney
    General argues Rule 3.8(d) would not compel disclosure of the
    evidence at issue in this case because it consists of confidential
    juvenile court records protected from dissemination pursuant to
    Welfare and Institutions Code section 827. We discuss in part
    II.D., post, how the Attorney General may comply with his
    ethical duty of disclosure in cases involving records subject to
    Welfare and Institutions Code section 827.
    36
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    final judgment [citation], and . . . the burden is on the petitioner
    to establish grounds for his release.” (Id. at p. 474.)
    “An appellate court receiving such a petition evaluates it
    by asking whether, assuming the petition’s factual allegations
    are true, the petitioner would be entitled to relief.” (Duvall,
    supra, 9 Cal.4th at pp. 474–475.) The court may request that
    the respondent provide an “informal written response.” (Cal.
    Rules of Court, rule 8.385(b)(1); see also id., rules 4.551(b)
    [“informal response” in noncapital habeas corpus proceedings in
    superior court], 4.573(a) [“informal written response” in capital
    habeas corpus proceedings in superior court].)
    In People v. Romero (1994) 
    8 Cal.4th 728
    , 742 (Romero) we
    described the “screening function” that an informal response
    serves in resolving petitions for writ of habeas corpus: “Through
    the informal response, the custodian or real party in interest
    may demonstrate, by citation of legal authority and by
    submission of factual materials, that the claims asserted in the
    habeas corpus petition lack merit and that the court therefore
    may reject them summarily, without requiring formal pleadings
    (the return and traverse) or conducting an evidentiary hearing.
    If the petitioner successfully controverts the factual materials
    submitted with the informal response,[23] or if for any other
    reason the informal response does not persuade the court that
    the petition’s claims are lacking in merit, then the court must
    proceed to the next stage by issuing an order to show cause or
    the now rarely used writ of habeas corpus. Deficiencies in the
    23
    The Romero court noted that a petitioner is afforded an
    opportunity to file a reply to any informal response. (Romero,
    supra, 8 Cal.4th at p. 741; see Cal. Rules of Court, rules
    8.385(b)(3), 4.551(b)(2), 4.573(a)(3).)
    37
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    informal response do not provide a justification for shortcutting
    this procedural step.” (Ibid., fn. omitted.)
    Upon the issuance of the order to show cause, the
    respondent files a return. (Duvall, 
    supra,
     9 Cal.4th at p. 475.)
    In     the    return,    the   respondent      is    required    to
    “ ‘allege facts tending to establish the legality of petitioner’s
    detention.’ ” (Id. at p. 476.) “Those facts are not simply the
    existence of a judgment of conviction and sentence when the
    petitioner challenges his restraint in prison. The factual
    allegations of a return must also respond to the allegations of
    the petition that form the basis of the petitioner’s claim that the
    confinement is unlawful. [Citations.] In addition to stating
    facts, the return should also, ‘where appropriate, . . . provide
    such documentary evidence, affidavits, or other materials as will
    enable the court to determine which issues are truly disputed.’ ”
    (Ibid., fn. omitted.) Following the filing of the return, the
    petitioner may file a pleading called a traverse that responds to
    the facts pleaded in the return. (Ibid.)
    In Duvall, we emphasized that the “requirement that the
    return allege facts responsive to the petition is critical, for the
    factual allegations in the return are either admitted or disputed
    in the traverse and this interplay frames the factual issues that
    the court must decide.” (Duvall, supra, 9 Cal.4th at p. 477.)
    Further, we specifically “reiterate[d] our disapproval of the
    practice of filing returns that merely contain a general denial of
    a habeas corpus petitioner’s factual allegations.” (Id. at
    pp. 480–481.)       However, the Duvall court outlined the
    procedures to follow when a respondent does not have access to
    information needed to either admit or deny a factual allegation
    of the petition. In such circumstances, the “return should set
    forth with specificity: (i) why information is not readily
    38
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    available; (ii) the steps that were taken to try to obtain it; and
    (iii) why [respondent] believes in good faith that certain alleged
    facts are untrue.” (Id. at p. 485.)
    With these procedures in mind, we consider a respondent’s
    duty in responding to a habeas corpus petitioner’s Brady claim
    in a case in which the respondent has knowledge of, or is in
    actual or constructive possession of, the evidence forming the
    basis of the claim. As alluded to above, we reiterate that upon
    the filing of a petition alleging a Brady violation, if the allegedly
    suppressed evidence is material and exculpatory, the Attorney
    General has an independent constitutional duty to disclose the
    evidence (see pt. II.A., ante), and to the extent the evidence is
    subject to Rule 3.8(d), the Attorney General has an independent
    ethical duty to disclose the evidence (see pt. II.B., ante).24 In
    this part we consider additional duties arising from habeas
    corpus procedural law that apply upon the mere allegation of a
    Brady violation. Specifically, we consider respondent’s duty in
    filing an informal response prior to the issuance of an order to
    show cause, and respondent’s duty in filing a return should a
    court issue an order to show cause.
    24
    In addition, even where disclosure is not mandated by
    Brady or Rule 3.8(d), the Attorney General may disclose the
    evidence to promote justice as a policy matter. Further, the
    Attorney General’s disclosure of allegedly suppressed evidence
    in response to a petition for writ of habeas corpus alleging a
    Brady violation is not necessarily an admission or concession on
    the merits because, as noted in part II.A., ante, the Attorney
    General may disclose the evidence in an attempt to comply with
    his Brady duty even where a court ultimately concludes that
    Brady did not mandate disclosure. (Kyles, supra, 514 U.S. at
    p. 439; Deputy Sheriffs, 
    supra,
     8 Cal.5th at p. 40.)
    39
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    Jenkins contends the “Attorney General[25] should not be
    permitted to sit on exculpatory evidence undermining a criminal
    defendant’s conviction and hope that the case does not survive
    the informal briefing stage.” She supports her argument by
    noting “the vast number of unrepresented habeas petitioners,”
    and argues that a contrary rule would “incentivize continued
    suppression.” She argues that the mere filing of a petition for
    writ of habeas corpus alleging a Brady claim requires the
    Attorney General to disclose the allegedly exculpatory evidence.
    We reject this argument. To begin with, a petitioner’s
    filing of a petition for writ of habeas corpus alleging a Brady
    claim, does not establish the existence of any exculpatory
    evidence. Thus, the analysis depends on whether the mere
    allegation of a Brady violation in a petition for writ of habeas
    corpus triggers a respondent’s duty under our habeas corpus
    case law to disclose the existence of known evidence underlying
    such claim.26
    The informal response is a judicially created procedure.
    (See Romero, 
    supra,
     8 Cal.4th at pp. 741–742 [outlining history
    25
    While our order limiting the issue to be briefed and argued
    suggested that this duty was the Attorney General’s, as a
    technical matter, the duty belongs to the Attorney General’s
    client, respondent Secretary of the Department of Corrections
    and Rehabilitation. (See § 1477 [stating that a writ of habeas
    corpus “must be directed to the person having custody of or
    restraining the person on whose behalf the application is
    made”].) However, the Attorney General must also comply with
    the habeas corpus procedural duties specified in this opinion
    when acting on behalf of respondent as counsel.
    26
    Again, the fact that respondent has knowledge, whether
    actual or constructive, of the evidence does not establish that
    the evidence is material or exculpatory.
    40
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    of the development of the use of informal responses in habeas
    corpus proceedings].) We are not aware of any case law, and
    Jenkins cites none, holding that a respondent must come
    forward with affirmative evidence of any kind in an informal
    response. (See In re Robbins (1998) 
    18 Cal.4th 770
    , 798, fn. 20
    [“Nothing in . . . Duvall, 
    supra,
     
    9 Cal.4th 464
    , [476], suggests,
    much less holds, that respondent is obligated to
    provide . . . documentary evidence in an informal response,”
    that will “ ‘ “enable the court to determine which issues are truly
    disputed” ’ ”].) Nor do the relevant rules of court that now
    govern informal responses in habeas corpus proceedings specify
    any such duty. (See Cal. Rules of Court, rules 8.385(b), 4.551(b),
    4.573(a).) Further, the “screening function” (Romero, at p. 742)
    that an informal response serves — allowing for the
    identification of facially deficient petitions — does not support
    imposing such a duty.
    Therefore, we agree with the Attorney General that, prior
    to the issuance of an order to show cause, in an informal
    response, respondent may choose to neither “confirm nor
    dispute” the existence of the alleged Brady evidence and may
    argue instead that, assuming the existence of the evidence, the
    evidence is not subject to Brady.27 Permitting respondent to
    27
    Again, we emphasize that we are discussing here only the
    respondent’s duties under the law governing habeas corpus
    petitions in responding to an allegation of a Brady violation. If
    the allegedly suppressed evidence is in fact subject to Brady
    and/or Rule 3.8(d), the Attorney General has a duty to disclose
    the evidence as outlined in part II.A. and/or part II.B., ante,
    respectively.
    41
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    argue in such a fashion should not prejudice a habeas corpus
    petitioner who merely carries a pleading burden prior to the
    issuance of an order to show cause. (See Duvall, 
    supra,
     9 Cal.4th
    at p. 474 [specifying a habeas corpus petitioner’s pleading
    burden].)
    However, given that a court is empowered, after allowing
    a petitioner to file a reply to the informal response (see Romero,
    
    supra,
     8 Cal.4th at p. 741) to summarily reject a petition for
    habeas corpus on the basis of “factual materials” submitted in
    an informal response (id. at p. 742, italics added), we do impose
    one restriction on a respondent’s informal response.
    Specifically, we conclude that, if the Attorney General has
    knowledge of, or is in actual or constructive possession of,
    evidence underlying a habeas corpus petitioner’s Brady claim,
    he shall not file an informal response on behalf of respondent
    that argues the petitioner has failed to present “documentary
    evidence supporting the claim” (Duvall, 
    supra,
     9 Cal.4th at
    p. 474), unless the Attorney General explains the basis for such
    an argument (e.g., by explaining that confidentiality provisions
    prohibit the Attorney General from confirming the existence of
    the evidence and the petitioner has failed to utilize available
    procedures to seek access to the evidence).28 This limited
    In addition, if the evidence does not in fact exist, contrary
    to our hypothetical positing that the Attorney General has
    knowledge of its existence, respondent may argue that the
    evidence does not exist.
    28
    In discussing his responsibilities in filing an informal
    response responding to a habeas corpus petitioner’s Brady
    claim, the Attorney General proposes a similar restriction,
    stating, “[W]hen the Attorney General has ready access to
    42
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    restriction is sufficient to guard against the possibility that a
    court would summarily reject a petition on the erroneous
    premise that the evidence does not exist, when in fact the
    Attorney General has knowledge of the existence of the
    evidence.
    However, after the issuance of an order to show cause,
    different rules apply. As we outlined ante, Duvall requires a
    respondent to plead facts responsive to the petitioner’s
    allegations, including “ ‘where appropriate, . . . provid[ing] such
    documentary evidence, affidavits, or other materials as will
    enable the court to determine which issues are truly disputed.’ ”
    (Duvall, 
    supra,
     9 Cal.4th at p. 476.) Thus, as the Attorney
    General acknowledges, “This obligation to allege facts would
    ordinarily include acknowledging the existence of alleged Brady
    evidence known to or possessed by the Attorney General.” We
    agree.
    Thus, for example, if a habeas corpus petitioner alleged
    that a prosecution witness had a prior conviction that was
    suppressed at trial under Brady, after the issuance of an order
    to show cause, the Attorney General, on behalf of respondent,
    would normally be required to file a return that either admitted
    or denied the existence of the prior conviction.29 By either
    information that would confirm or dispel the accuracy of
    petitioner’s factual claims, the Attorney General should not
    contest the sufficiency of evidence provided by petitioner
    without providing factual clarification — or identifying a
    statutory inability to do so.”
    29
    In this hypothetical scenario, the Attorney General would
    have knowledge of such evidence given his role in administering
    the state’s depository of criminal history records. (Cf. § 11105,
    43
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    admitting or denying the factual basis of the habeas corpus
    petitioner’s Brady claim, respondent would thereby “sharpen[]
    the issues” that remain to be decided in any evidentiary
    hearing.30 (Duvall, 
    supra,
     9 Cal.4th at p. 480.)
    Accordingly, we conclude that prior to the issuance of an
    order to show cause on a petition for writ of habeas corpus
    raising a Brady claim, the Attorney General generally may file
    an informal response on behalf of a respondent that neither
    confirms nor disputes the existence of the alleged Brady
    evidence. However, the Attorney General shall not file an
    informal response contending that the petitioner has failed to
    demonstrate the existence of the evidence where the Attorney
    General has knowledge of, or is in actual or constructive
    possession of, the evidence, without providing a reasoned
    explanation rooted in the Attorney General’s inability to confirm
    the existence of the evidence and petitioner’s failure to utilize
    procedures for obtaining the evidence. Further, at the return
    stage, the Attorney General, on behalf of the respondent, shall
    not persist in raising any argument put forth in an informal
    response that the petitioner failed to carry his or her burden of
    showing the evidence exists without providing a reason for why
    respondent is unable to confirm or deny the existence of the
    subd. (a)(2)(A) [“ ‘State summary criminal history information’
    means the master record of information compiled by the
    Attorney General pertaining to the identification and criminal
    history of a person”].)
    30
    At the return stage, the respondent remains free to
    present whatever legal arguments he or she deems appropriate
    in responding to the petitioner’s claim. Thus, with respect to a
    Brady claim, the respondent might argue that the evidence is
    not material.
    44
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    evidence (e.g., because the alleged evidence is subject to
    disclosure prohibitions).31
    D.
    In his answering brief in this court, the Attorney General
    points out that the evidence underlying Jenkins’s Brady claim,
    namely the juvenile adjudications that Brittneeh and Sade
    allegedly suffered, are subject to disclosure restrictions
    contained in Welfare and Institutions Code section 827.32 In
    considering the relevance of this fact to the duties discussed in
    this opinion, we first outline the existing law governing the
    government’s Brady obligation in the context of confidential
    records protected by Welfare and Institutions Code section 827.
    We then discuss how this law applies with respect to the
    constitutional, ethical, and habeas corpus procedural duties
    outlined in parts II.A., II.B., and II.C., ante, respectively.33
    31
    As previously noted, we discuss in part II.D., post, how the
    respondent may carry its Duvall pleading duty when a statute,
    such as Welfare and Institutions Code section 827, restricts the
    disclosure of the evidence underlying the respondent’s pleading
    burden.
    32
    Neither party referred to these disclosure restrictions in
    the proceedings in the Court of Appeal or at the petition stage
    in this court. In her reply brief, Jenkins does not dispute that
    Welfare and Institutions Code section 827 restricts the
    disclosure of the alleged adjudications.
    33
    Apart from Welfare and Institutions Code section 827, we
    express no opinion as to whether and how other disclosure
    restrictions might apply with respect to the evidence underlying
    a Brady claim in a petition for writ of habeas corpus and how
    such restrictions might affect the duties we have outlined in
    parts II.A., II.B., and II.C., ante.
    45
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    Welfare and Institutions Code section 827 has long since
    “repose[d] in the juvenile court control of juvenile records.”
    (T.N.G. v. Superior Court (1971) 
    4 Cal.3d 767
    , 780.) The statute
    “requires the permission of the court before any information
    about juveniles is disclosed to third parties by any law
    enforcement official.” (Ibid.) In J.E. v. Superior Court (2014)
    
    223 Cal.App.4th 1329
     (J.E.), the Court of Appeal provided an
    overview of Welfare and Institutions Code section 827’s
    confidentiality provisions and the petition procedure that may
    be used by those not specifically statutorily authorized to inspect
    such records to gain access to them, including criminal
    defendants such as Jenkins: “Section 827 specifies who is
    authorized to inspect the files, and it lists the prosecutor as one
    of the authorized persons. An authorized person, in turn, may
    not disclose information from the files to an unauthorized
    person without a court order. . . . [¶] Section 827 also contains
    provisions that permit unauthorized persons to directly petition
    the juvenile court for access to the confidential records.
    [Citations.] Under section 827 the juvenile court has ‘exclusive
    authority to determine whether and to what extent to grant
    access to confidential juvenile records’ to unauthorized persons.
    [Citation.]     This statutory scheme reflects a legislative
    determination that the juvenile court has ‘both the “ ‘sensitivity
    and expertise’ to make decisions about access to juvenile
    records.” ’ ” (J.E., at p. 1337, fns. omitted.)
    The J.E. court also summarized the in camera review
    procedures specified by Welfare and Institutions Code
    section 827 and California Rules of Court, rule 5.552 that govern
    a petition for disclosure of confidential juvenile documents.
    (J.E., supra, 223 Cal.App.4th at p. 1338.) The J.E. court
    concluded that these in camera review procedures provide the
    46
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    “proper mechanism to resolve a defense Brady disclosure
    request involving information in a juvenile file.” (Ibid.)
    In reaching this conclusion, the J.E. court noted that
    although the “government’s Brady obligations are typically
    placed upon the prosecutor, the courts have recognized that the
    Brady requirements can also be satisfied when a trial court
    conducts an in camera review of documents containing possible
    exculpatory or impeachment evidence.”               (J.E., supra,
    223 Cal.App.4th at p. 1336, citing, inter alia, Ritchie, 
    supra,
    480 U.S. at pp. 57–58.) The J.E. court noted that, in Ritchie, the
    United States Supreme Court held that a defendant’s right to a
    fair trial was sufficiently protected by a trial court’s in camera
    review of confidential child protection agency files that the
    defendant sought. (J.E., at p. 1336, citing Ritchie, at pp. 59–61.)
    The Ritchie court stated that the trial court was required to
    disclose the material to the defense if it were to determine the
    confidential files contained Brady material. (Ritchie, at pp. 60–
    61.)
    The J.E. court explained that Welfare and Institutions
    Code section 827 codified a similar procedure for in camera
    review, and possible disclosure, of juvenile records that “has
    long been recognized as an appropriate vehicle to protect both
    the defendant’s right to a fair trial and the state’s interest in
    confidentiality of the files.” (J.E., supra, 223 Cal.App.4th at
    p. 1338, citing, inter alia, People v. Martinez (2009) 
    47 Cal.4th 399
    , 450–454.) And, as we described in Johnson, “The J.E. court
    explained that, ‘[a]s a practical matter, use of a [Welfare and
    Institutions Code] section 827 petition to secure Brady review
    can also serve to streamline the review process. A section 827
    petition filed directly with the juvenile court bypasses the
    prosecutor as an intermediary and allows the court to make the
    47
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    disclosure decision in the first instance. This eliminates the
    need for the prosecution to request court permission for
    disclosure after its Brady review, and forestalls litigation
    brought by the defense over whether the prosecution has
    complied with its Brady obligations. Given that the Legislature
    has established the section 827 court petition process for access
    to juvenile files, it makes practical sense to allow use of this
    process to resolve Brady requests through a single procedure.’
    ([J.E.], supra, 223 Cal.App.4th at p. 1339.)” (Johnson, 
    supra,
    61 Cal.4th at p. 718.) Accordingly, in Johnson, we cited Ritchie
    and J.E., as providing the “procedure used for confidential
    juvenile records.” (Ibid.)
    Finally, in People v. Stewart (2020) 
    55 Cal.App.5th 755
    (Stewart), the Court of Appeal concluded that the People had
    violated their duty under Brady and its progeny in connection
    with a police report that was protected from disclosure by
    Welfare and Institutions Code section 827. The alleged victim
    of the offenses discussed in the police report, which pertained to
    an incident separate from the charged offenses, was a minor and
    a key prosecution witness in the defendant’s case. (Stewart, at
    pp. 761, 776.) After discussing Ritchie, J.E., and Johnson —
    “three cases that bear on a prosecutor’s Brady obligation in the
    context of confidential records” (Stewart, at p. 771) — the
    Stewart court concluded that the government had suppressed
    the police report, which contained potentially impeaching
    information as to the alleged victim/witness. (Id. at pp. 775–
    776.) The Stewart court reasoned that the People could have
    satisfied their Brady obligation under such case law by
    “informing the defense of the existence of potential
    impeachment material in the police report, making a copy of the
    [police report] available for the juvenile court’s review, and
    48
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    referring [the defendant] to the section 827 procedure to obtain
    it,” but had failed to do so. (Id. at p. 775.)
    This case law informs our assessment of the Attorney
    General’s duty in responding to a petition for writ of habeas
    corpus alleging a Brady violation from the failure to disclose
    evidence in a case in which the Attorney General is himself
    prohibited from disclosing the evidence pursuant to Welfare and
    Institutions Code section 827. Applying such law, we conclude
    that the Attorney General may satisfy his Brady duty under
    such circumstances by:         (1) informing the petitioner or
    petitioner’s counsel that the materials allegedly suppressed are
    protected by Welfare and Institutions Code section 827;
    (2) informing the petitioner or petitioner’s counsel of the Welfare
    and Institutions Code section 827 procedure needed to obtain
    such evidence; and (3) after the petitioner files a Welfare and
    Institutions Code section 827 petition, making any such
    evidence that the Attorney General possesses available for a
    juvenile court’s review under that statute. (See Stewart, supra,
    55 Cal.App.5th at p. 775 [outlining prosecutor’s duty with
    respect to such evidence prior to conviction].)
    Similarly, with respect to his ethical duty under
    Rule 3.8(d) under these circumstances, while the Attorney
    General properly notes that comment [3] to Rule 3.8 specifies
    that it “does not require disclosure of information protected from
    disclosure by federal or California laws and rules,” as discussed
    in the previous paragraph, the Attorney General need not
    disclose confidential materials. Rather, we conclude that the
    Attorney General may comply with his Rule 3.8(d) duty in the
    same manner as he may comply with his Brady duty with
    respect to confidential materials.           (Cf. Stewart, supra,
    55 Cal.App.5th at p. 775.)
    49
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    Finally, with respect to a respondent’s duty in filing a
    return under these circumstances, we conclude that a
    respondent may plead an inability to plead facts about the
    alleged Brady evidence due to the Welfare and Institutions Code
    section 827 disclosure bar. Permitting a respondent to file such
    a pleading would be consistent with our discussion in Duvall of
    pleading rules to be applied “where access to critical information
    is limited or denied to one party.” (Duvall, 
    supra,
     9 Cal.4th at
    p. 485.) Such a pleading would also be consistent with the
    requirement in Duvall that the “return should set forth with
    specificity . . . why information is not readily available.” (Ibid.)
    The Attorney General should also state in respondent’s return
    that the petitioner or petitioner’s counsel may utilize the
    procedure specified in that statute to attempt to obtain such
    evidence and make any such evidence he possesses available for
    a juvenile court’s review under Welfare and Institutions Code
    section 827. By filing such a return, respondent also will serve
    the salutary purpose of alerting the habeas corpus court of the
    possible need for ancillary proceedings in the juvenile court
    before the habeas corpus court can “endeavor to determine
    whether there are facts legitimately in dispute that may require
    holding an evidentiary hearing.” (Duvall, at p. 485.)
    In sum, in responding to a petition for writ of habeas
    corpus alleging a Brady violation based on a failure to disclose
    evidence when the Attorney General is himself prohibited from
    disclosing that evidence pursuant to Welfare and Institutions
    Code section 827, the Attorney General need not, and should
    not, himself disclose the evidence in contravention of statutory
    confidentiality procedures. However, the existence of such
    confidentiality provisions does not relieve the Attorney General
    of the various disclosure duties outlined in this opinion. Instead,
    50
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    when faced with such a petition, the Attorney General should
    proceed as outlined in this part and, in so doing, will comply
    with the duties we have described in this opinion without
    contravening the disclosure restrictions contained in Welfare
    and Institutions Code section 827.
    E.
    To recap, where allegedly suppressed evidence forming
    the basis of a Brady claim in a petition for writ of habeas corpus
    is in fact subject to Brady, the Attorney General has a
    constitutional duty of disclosure that exists as of the time of the
    filing of the petition as outlined in part II.A., ante.34 Where such
    evidence is not subject to Brady, but is subject to Rule 3.8(d), the
    Attorney General has an ethical duty of disclosure that exists as
    of the time of the filing of the petition as outlined in part II.B.,
    ante. Where such evidence is neither subject to Brady nor
    subject to disclosure under Rule 3.8(d), respondent has a duty to
    disclose the existence of the evidence under Duvall that arises
    34
    The Attorney General states in his brief that in cases in
    which the material underlying a Brady petition for writ of
    habeas corpus is in fact Brady material, as a “policy decision,”
    he will either: (1) provide the material directly to the petitioner,
    or (2) if the evidence is subject to disclosure restrictions, provide
    the petitioner with notice sufficient to permit the petitioner to
    seek court-ordered disclosure. We emphasize that the Attorney
    General has a legal duty mandated by Brady and its progeny to
    disclose such evidence. In addition, because evidence that is in
    fact Brady material will also, by definition, be subject to
    Rule 3.8(d), the Attorney General also has an ethical duty to
    disclose such evidence. In addition, as noted in the text, in a
    case in which the evidence is subject to disclosure restrictions
    contained in Welfare and Institutions Code section 827, the
    Attorney General may satisfy those duties by proceeding as
    outlined in part II.D., ante.
    51
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    after the issuance of an order to show cause as outlined in part
    III.C., ante. Finally, where such evidence is subject to disclosure
    restrictions contained in Welfare and Institutions Code
    section 827, the Attorney General and the respondent may
    fulfill their duties by proceeding as outlined in part II.D., ante.
    We emphasize that where the evidence at issue is actually
    Brady material and/or subject to Rule 3.8(d), the Attorney
    General’s constitutional and ethical obligations exist
    independently from respondent’s duty under habeas corpus case
    law to respond to a petitioner’s Brady claim. Thus, when
    triggered, such duties exist as of the filing of the petition. In
    addition, the respondent has procedural duties that arise from
    a petitioner’s allegation that are triggered upon the issuance of
    an order to show cause.
    In light of the Attorney General’s admittedly deficient
    litigation practices in the Court of Appeal,35 as well as our
    clarification of the Attorney General’s disclosure duties, it is
    appropriate to remand the matter to the Court of Appeal for
    35
    In his merits brief in this court, the Attorney General
    acknowledged that his return in the Court of Appeal was
    “deficient . . . because it . . . argued (in part) that petitioner had
    not provided sufficient proof of the alleged juvenile
    adjudications, yet did not provide clarifying materials or plead
    an inability to do so.” In addition, in that brief, the Attorney
    General stated that his informal response in the Court of Appeal
    “did not represent best practices” for similar reasons. At oral
    argument in this court, the Attorney General stated, “We did not
    fulfill our duty to assist the habeas tribunal to understand what
    facts were actually at issue in this case.” While we appreciate
    the Attorney General’s eventual concessions, we emphasize that
    we do not condone such errors and that a prudent prosecutor
    should take care to not make these mistakes in the future.
    52
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    further proceedings so as to permit that court to consider
    Jenkins’s petition upon a fulsome record prepared in accordance
    with the principles that we have outlined in this opinion. In
    remanding, we express no opinion on the merits of Jenkins’s
    petition for writ of habeas corpus.
    Finally, we urge the prosecutors in this case, and in every
    other, to carefully consider the constitutional, ethical, and
    habeas corpus procedural duties that we have outlined herein to
    ensure that they faithfully bear the special responsibilities
    ascribed to the prosecution in our system of justice. We remind
    the prosecutors of today of what we said in In re Ferguson (1971)
    
    5 Cal.3d 525
    : “The search for truth is not served but hindered
    by the concealment of relevant and material evidence. Although
    our system of administering criminal justice is adversary in
    nature, a trial is not a game. Its ultimate goal is the
    ascertainment of truth, and where furtherance of the adversary
    system comes in conflict with the ultimate goal, the adversary
    system must give way to reasonable restraints designed to
    further that goal. Implementation of this policy requires
    recognition of a duty on the part of the prosecution to disclose
    evidence to the defense in appropriate cases.” (Id. at pp. 531–
    532.)
    53
    In re JENKINS
    Opinion of the Court by Guerrero, C. J.
    DISPOSITION
    The judgment of the Court of Appeal is reversed, and the
    matter is remanded to that court for further proceedings
    consistent with this opinion.
    GUERRERO, C. J.
    We Concur:
    CORRIGAN, J.
    LIU, J.
    KRUGER, J.
    GROBAN, J.
    JENKINS, J.
    EVANS, J.
    54
    See next page for addresses and telephone numbers for counsel who
    argued in Supreme Court.
    Name of Opinion In re Jenkins
    __________________________________________________________
    Procedural Posture (see XX below)
    Original Appeal
    Original Proceeding
    Review Granted (published)
    Review Granted (unpublished) XX NP opn. filed 1/22/21 – 2d Dist.,
    Div. 1
    Rehearing Granted
    __________________________________________________________
    Opinion No. S267391
    Date Filed: March 27, 2023
    __________________________________________________________
    Court: Superior
    County: Los Angeles
    Judge: Lisa B. Lench
    __________________________________________________________
    Counsel:
    Rudolph J. Alejo, under appointment by the Supreme Court, for
    Petitioner Jasmine Jenkins.
    Xavier Becerra and Rob Bonta, Attorneys General, Lance E. Winters,
    Chief Assistant Attorney General, Susan Sullivan Pithey and Jeffrey
    M. Laurence, Assistant Attorneys General, Zee Rodriguez, Paul Thies,
    Seth K. Schalit and J. Michael Chamberlain, Deputy Attorneys
    General, for Respondent Department of Corrections and
    Rehabilitation.
    Counsel who argued in Supreme Court (not intended for
    publication with opinion):
    Rudolph J. Alejo
    Attorney at Law
    520 South Grand Avenue, 4th Floor
    Los Angeles, CA 90071
    (213) 243-0300
    J. Michael Chamberlain
    Deputy Attorney General
    455 Golden Gate Avenue, Suite 11000
    San Francisco, CA 94102
    (415) 510-3775