Commonwealth v. Long , 476 Mass. 526 ( 2017 )


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    SJC-11253
    COMMONWEALTH   vs.   DERYCK LONG.
    Norfolk.      October 11, 2016. - February 24, 2017.
    Present:   Gants, C.J., Hines, Gaziano, Lowy, & Budd, JJ.
    Homicide. Constitutional Law, Assistance of counsel. Evidence,
    Exculpatory, Wiretap, Result of illegal search. Cellular
    Telephone. Electronic Surveillance. Practice, Criminal,
    Capital case, Assistance of counsel.
    Indictments found and returned in the Superior Court
    Department on March 9, 2006.
    Pretrial motions to suppress evidence were heard by Janet
    L. Sanders, J.; the cases were tried before Kenneth J. Fishman,
    J., and a motion for a new trial, filed on August 4, 2014, was
    heard by him.
    Robert F. Shaw, Jr., for the defendant.
    Pamela Alford, Assistant District Attorney (Craig F.
    Kowalski, Assistant District Attorney, also present) for the
    Commonwealth.
    GAZIANO, J.    A Superior Court jury found the defendant
    guilty of murder in the first degree, on a theory of deliberate
    premeditation, in the shooting death of Jamal Vaughn (victim) on
    2
    January 9, 2016, in Quincy.   Before us is the defendant's appeal
    from his convictions and from the denial of his motion for a new
    trial.   He claims that his trial counsel's uninformed decision
    not to introduce cell site location information (CSLI) to
    contradict the testimony of a key prosecution witness
    constituted ineffective assistance of counsel, and that it was
    error for a motion judge to deny his pretrial motion to suppress
    the testimony of the same witness because the Commonwealth had
    obtained his testimony as a result of an illegal wiretap that
    this court previously had ordered suppressed.   See Commonwealth
    v. Long, 
    454 Mass. 542
     (2009).
    We conclude that the defendant was not deprived of the
    effective assistance of trial counsel, and that there was no
    error in the motion judge's determination that the witness's
    testimony was sufficiently attenuated from the suppressed
    wiretap evidence to dissipate the taint of illegality.
    Accordingly, we affirm the conviction and the denial of the
    motion for a new trial, and decline to exercise our authority
    under G. L. c. 278, § 33E, to disturb the verdict.
    1.   Facts.   We recite the facts that the jury could have
    found, reserving certain facts for our analysis of the
    particular issues.
    From late 2005 to early 2006, the defendant would
    frequently stay with his girl friend, Janet Ojo, at her house on
    3
    Franklin Street in Quincy.     About two weeks before the shooting,
    the defendant and Ojo got into a dispute over money and she
    ended the relationship.
    On the evening of January 9, 2006, the defendant asked
    Courtney Forde to drive him to Ojo's house to pick up some
    belongings that he had left behind.     Forde picked the defendant
    up in his minivan.   He also brought along his friend and drug
    dealing associate, Paul Brown, and a woman whom Forde had
    recently met.
    When they arrived at Ojo's house, the defendant got out of
    the vehicle and went inside.    Ojo was not home, but the
    defendant encountered a few of her friends, including the
    victim.   The defendant and the victim got into a fistfight about
    some money that Ojo maintained the defendant had stolen from
    her.    The fight spilled outside to the front yard.   Brown got
    out of the minivan and attempted to tear off a door from a
    vehicle parked in the driveway.    Now outnumbered, the victim ran
    inside the house.    The defendant tried to re-enter the house and
    tossed a brick through one of the windows.
    The defendant and Brown got back into the minivan and Forde
    drove a short distance down the street, then stopped the vehicle
    because the defendant had remembered that he had left some "IDs"
    behind in a shoebox.    Forde, the defendant, and Brown walked
    4
    back to the house.   The victim was outside and ran back into the
    house when he saw the three approaching.
    Forde drove back to Boston.    Along the way, he dropped off
    the unnamed woman in Milton.   Forde stopped at the house in the
    Mattapan section of Boston where the defendant was staying at
    that time, and the defendant was able to find his keys to Ojo's
    house.   Forde, the defendant, and Brown returned there.    This
    time, nobody was home.   The three entered using the defendant's
    keys and took numerous items, some belonging to the defendant
    and some belonging to Ojo, including women's clothes, food, and
    electronics.   They also took two handguns stored in a shoebox, a
    revolver and a "rusty" Tec-9 semiautomatic pistol.    The
    defendant put the revolver "on his waist."
    The defendant then directed Forde to drive to an apartment
    building on Willard Street in Quincy, where, Forde knew, the
    defendant had stayed with Ojo in the past.    As they approached
    the building, Forde called two of his drug customers, who lived
    there.   He intended to ask one of them to open the back door so
    that the defendant could enter the building.    Neither answered.
    Forde backed the minivan into a dimly-lit spot near some
    trees, far from the entrance to the building.    At the same time,
    the victim left the building to retrieve a package of cigarettes
    from his vehicle.    The defendant and Brown got out of Forde's
    5
    vehicle, walked quickly over to the victim, and shot him several
    times.1
    At around midnight, a neighbor at the Willard Street
    building telephoned 911 to report hearing gunshots.     Police and
    emergency services responded to the scene, where they discovered
    the victim with three gunshot wounds.    He was transported to a
    hospital where he was pronounced dead.
    Police recovered two spent projectiles, fired from two
    different weapons, from the victim's body, and seven shell
    casings, all of which came from the same nine millimeter pistol.
    They also found on the ground near the victim's jacket a spent
    projectile that was "mostly" consistent with having been shot
    from a revolver.
    After the shooting, Forde drove to back to his house in
    Boston from Quincy.     Forde then went to the house of one of his
    friends, where the three men unloaded all of the items taken
    from Ojo's house, including a shoebox containing a rusty firearm
    and its magazine.
    2.   Discussion.   a.   Ineffective assistance of counsel.
    The defendant argues, as he did in his motion for a new trial,
    that his trial counsel was constitutionally ineffective.     He
    contends that counsel should have introduced CSLI evidence to
    1
    The Commonwealth charged Brown with the victim's murder,
    and he was acquitted in a separate trial.
    6
    challenge the testimony of Forde, who testified pursuant to a
    plea agreement, concerning his whereabouts during a specific
    period of time near the time of the shooting.    The defendant
    also maintains that counsel failed to investigate, and did not
    understand, the significance of the CSLI evidence.2
    In reviewing a claim of ineffective assistance in a case of
    murder in the first degree, we apply the more favorable standard
    of review of a substantial likelihood of a miscarriage justice,
    pursuant to G. L. c. 233, § 33E.   See Commonwealth v. Vargas,
    
    475 Mass. 338
    , 358 (2016).   Under this standard, "[w]e consider
    whether there was an error in the course of the trial (by
    defense counsel, the prosecutor, or the judge) and, if there
    was, whether that error was likely to have influenced the jury's
    conclusion."   
    Id.,
     quoting Commonwealth v. Lessieur, 
    472 Mass. 317
    , 327, cert. denied, 
    136 S. Ct. 418
     (2015).    Where the
    defendant's ineffective assistance claim is based on a tactical
    or strategic decision, we apply the more rigorous standard that,
    to be ineffective, the attorney's decision must have been
    "manifestly unreasonable."   Commonwealth v. Lang, 
    473 Mass. 1
    ,
    14 (2015).
    i.   Failure to introduce exculpatory CSLI evidence.     The
    defendant argues that portions of the CSLI evidence that was not
    2
    The CSLI evidence was based on records from Forde's
    cellular telephone and the cellular telephone carried by Forde's
    girl friend.
    7
    introduced at trial would have served to challenge, and
    discredit, a portion of Forde's testimony about his actions
    following the confrontation with the victim at the Franklin
    Street residence, and before the return there later that
    evening.    He contests the accuracy of Forde's testimony that he
    and the defendant left Franklin Street, traveled to Mattapan for
    a brief period of time, and then returned to Franklin Street,
    without mentioning any stops along the way, particularly other
    stops in Mattapan and the Dorchester section of Boston.    The
    defendant points to CSLI evidence showing that Forde's telephone
    was absent from Quincy for more than one hour, and traveled to
    several locations in Mattapan and Dorchester during that time
    frame.3    He argues that trial counsel was ineffective because he
    3
    Cell site location information (CSLI) is "a cellular
    telephone service record or records that contain information
    identifying the base station towers and sectors that receive
    transmissions from a [cellular] telephone" (quotations and
    citation omitted). Commonwealth v. Augustine, 
    467 Mass. 230
    ,
    231 n.1 (2014), S.C., 
    470 Mass. 837
     and 
    472 Mass. 448
     (2015).
    "'Historical' CSLI refers to CSLI relating to and generated by
    cellular telephone use that has 'already occurred at the time of
    the order authorizing the disclosure of such data'" (citation
    omitted). 
    Id.
     These records are not usable for real-time
    tracking. In general, records of the specific tower which
    received a cellular telephone transmission at a given time can
    be used to provide a rough geographic location of that telephone
    at that time, within the transmission range of that tower. Id.
    at 233. See Commonwealth v. Gonzalez, 
    475 Mass. 396
    , 412 & n.37
    (2016)("data from a single cell phone tower" is not adequate to
    place caller within specific range of distance from that tower;
    in some circumstances, transmissions are not from tower that is
    geographically closest to location of given cellular telephone).
    8
    failed to introduce this independent evidence to discredit
    Forde's testimony.
    The judge determined that, while Forde's credibility "was
    an essential issue for the jury" because of his "indisputably
    critical" role in the Commonwealth's case, the defendant failed
    to establish that the decision not to use the CSLI was
    manifestly unreasonable.   The judge noted that the CSLI was a
    double-edged sword that both called into question Forde's
    earlier timeline and placed the defendant at the scene of the
    shooting.   In addition, the judge concluded that trial counsel
    effectively challenged Forde's credibility through rigorous
    cross-examination.
    We afford particular deference to a decision on a motion
    for a new trial where the motion judge was also the trial judge,
    see Commonwealth v. Forte, 
    469 Mass. 469
    , 488 (2014), and
    discern no abuse of discretion in this case.   The CSLI evidence
    did not materially impeach Forde's trial testimony.   Forde did
    not specify how long he, the defendant, and Brown were in Boston
    between the two trips to Quincy.   He testified, without
    providing any time frame, that they left Franklin Street, went
    to Milton to drop off the woman who had been with them, went to
    the house where the defendant was staying in Mattapan where the
    defendant went inside for five minutes to get his keys, from
    there went to a liquor store, and then drove back to Quincy.
    9
    Forde's cellular telephone, according to the CSLI evidence,
    was in Quincy at 9:48 P.M.; Mattapan and Dorchester from 10:17
    through 10:45 P.M.; and again in Quincy or Braintree from
    11:19 P.M. until at least 11:52 P.M..   Police received the 911
    call concerning shots fired in Quincy at 11:55 P.M.   The CSLI
    evidence thus contains a period of approximately twenty to
    twenty-five minutes that Forde did not describe during his trial
    testimony.4
    The CSLI evidence may have cast some doubt on Forde’s
    testimony concerning his whereabouts in Boston during that
    discrete time period.   The problem with the evidence, however,
    is that it corroborated Forde's testimony that he drove the
    defendant from Boston to Quincy at the time of the shooting.
    Thus, it was not manifestly unreasonable for trial counsel to
    decline to introduce evidence placing his client at the scene of
    the crime.
    Trial counsel was able to challenge Forde's testimony in a
    number of other ways, none of which carried the risk of
    4
    The defendant also argues that the CSLI evidence
    demonstrates that Forde was in contact with his girl friend,
    during this critical time frame and that his girl friend, who
    traveled from Boston to Quincy, coordinated her activities with
    Forde. The CSLI evidence did not directly contradict Forde.
    Forde did not offer any testimony on the subject of telephoning
    his girl friend during his trips back and forth to Quincy.
    Moreover, the CSLI evidence did not contradict Forde's testimony
    that he met up with his girl friend sometime later in the
    evening.
    10
    corroborating Forde's testimony that he and the defendant had
    been in Quincy at the time of the shooting.   See generally
    Commonwealth v. Grenier, 
    415 Mass. 680
    , 685-687 (1993).   Trial
    counsel cross-examined Forde about his plea agreement, his
    occupation as a drug dealer, a prior incident in which he had
    shot at someone, his infidelity to his then girl friend, the
    care he took when loading his gun to make sure that his
    fingerprints were not on the bullets so that they could not be
    traced, and his extensive criminal record.
    Trial counsel also rigorously cross-examined Forde on
    inconsistencies between the version of events that he initially
    told police and his testimony at trial.5   See Commonwealth v.
    Valentin, 
    470 Mass. 186
    , 191 (2014) (counsel not ineffective in
    failing to cross-examine witness concerning particular statement
    5
    Initially, Forde did not tell police that he had smoked
    marijuana on the night of the shooting, but admitted on cross-
    examination that he had smoked marijuana and consumed alcohol
    that night.
    Forde also testified that the guns that they took from
    Ojo's house were a Tec-9 pistol and a .38 revolver. On cross-
    examination, Forde admitted that he initially told police that
    the two guns the men found at Ojo's house were a Tec-9 pistol
    and a ".357." In his closing, counsel argued that Forde had
    changed his story to fit the ballistics report, a further
    indication that he was lying.
    Forde testified further that he had never been to the
    Franklin Street house prior to the night of the shooting. On
    cross-examination, however, Forde admitted that he had told
    State police that he had been to the Franklin Street house on
    prior occasions before the evening of the shooting.
    11
    where counsel otherwise "conducted a thorough impeachment" of
    witness through cross-examination).
    In his closing argument, trial counsel pointed to a number
    of reasons why the jury should not believe Forde.    He told the
    jury, "You have to look at Courtney Forde's testimony in the
    context of that deal . . . the deal of a lifetime . . .
    [whereby] Mr. Forde goes from [a] potential sentence of life in
    prison to walking away."   He reminded the jury of Forde's
    testimony that when the victim walked across the parking lot at
    the Willard Street building, Forde did not recognize him.     "Most
    crucially, he told us, from that witness stand[,] under oath[,]
    he did not recognize the man at Willard Street[.]    [H]e didn't
    recognize him as the man that had been fighting with [the
    defendant]."
    ii.   Failure to investigate.     The defendant argues that his
    trial counsel did not investigate properly the use of CSLI
    evidence, and did not understand its importance.
    The duty to investigate is one of the foundations of the
    effective assistance of counsel, because counsel's strategic
    decisions can be adequate only if counsel is sufficiently
    informed about the available options.     See Strickland v.
    Washington, 
    466 U.S. 668
    , 680 (1984) ("[T]he Sixth Amendment [to
    the United States Constitution] imposes on counsel a duty to
    investigate, because reasonably effective assistance must be
    12
    based on professional decisions and informed legal choices can
    be made only after investigation of options").    Trial counsel
    must conduct a reasonable investigation into possible defenses,
    even if counsel ultimately does not pursue those defenses at
    trial.   See Commonwealth v. Alvarez, 
    433 Mass. 93
    , 102 (2000)
    (trial counsel ineffective for failing to fully examine
    defendant's mental health records, which corroborated
    defendant's testimony about her own mental health history, and
    therefore would have aided in establishing defense of lack of
    criminal responsibility defense).    Nonetheless, "[w]hile counsel
    certainly has 'a duty to make reasonable investigations,'
    counsel is also afforded the opportunity to 'make a reasonable
    decision that makes particular investigations unnecessary.'"
    Commonwealth v. Denis, 
    442 Mass. 617
    , 629 (2004), quoting
    Strickland, 
    466 U.S. at 691
    .    "[S]trategic choices made after
    less than complete investigation are reasonable [only] to the
    extent that reasonable professional judgments support the
    limitation on investigation."    Commonwealth v. Baker, 
    440 Mass. 519
    , 529 (2003), quoting Strickland, 
    supra at 690-691
    .
    Here, the motion judge concluded that defense counsel
    conducted an adequate investigation of the CSLI evidence.
    According to an affidavit that the judge credited, defense
    counsel obtained the CSLI records and was aware that a
    telecommunications expert had testified at Brown's trial.
    13
    Counsel had a general understanding of that testimony, but was
    unaware of the specific details.   He included the expert's name
    on his list of possible witnesses, but believed that his
    testimony would not be necessary to impeach Forde's credibility.
    Counsel ultimately decided not to present the CSLI evidence
    through the expert witness "because, at the time [he] sincerely
    believed that [his] cross-examination of Courtney Forde had gone
    well and that [Forde] would not and could not be believed by the
    jury."
    Given this, there was no abuse of discretion in the judge's
    determination that defense counsel appreciated the value of the
    CSLI evidence and, as the trial progressed, continued to gauge
    the usefulness of this evidence.   That the defense strategy did
    not achieve an acquittal does not, in hindsight, thereby render
    defense counsel's strategic decision ineffective assistance of
    counsel.   See Commonwealth v. Kolenovic, 
    471 Mass. 664
    , 674-675
    (2015) (no ineffective assistance where defense counsel made
    strategic decision to pursue specific trial strategy, unless
    decision was manifestly unreasonable); Commonwealth v. Haley,
    
    413 Mass. 770
    , 777-778 (1992).
    b.     Denial of motion to suppress.   The defendant's second
    claim of error is that the judge who ruled on his motion to
    suppress erred in denying that motion and allowing the
    14
    introduction of Forde's testimony, because it was the product of
    an illegal wiretap.
    i.    Background.    On January 20, 2006, the Commonwealth
    obtained a warrant authorizing the placement of a wiretap on a
    booth in the visiting room at the Norfolk County house of
    correction in order to monitor conversations between the
    defendant and his visitors.     As a result of the wiretap
    recordings, police identified another witness, Gillian Gibbs,
    and obtained more information on Forde's involvement in the
    shooting.
    The defendant filed a motion to suppress the intercepted
    conversations, arguing that the wiretap was not authorized under
    G. L. c. 272, § 99.     A Superior Court judge, who was not the
    trial judge, allowed the motion.     She concluded that the wiretap
    did not meet the requirements of G. L. c. 272, § 99, because the
    Commonwealth failed to establish that the offense under
    investigation was committed in connection with "organized
    crime."   A single justice of this court allowed the
    Commonwealth's application to pursue an interlocutory appeal to
    this court, and we affirmed the Superior Court judge's decision.
    See Long, 454 Mass. at 550, 554-558.
    After an evidentiary hearing to determine the scope of the
    evidence to be suppressed, the motion judge excluded the
    recording of the conversation between the defendant and Gibbs,
    15
    and any testimony by Gibbs.     The judge found that Gibbs's
    decision to speak with police was directly motivated by the fact
    that they confronted her with the wiretap evidence.     The judge
    did not, however, order that any testimony by Forde be
    suppressed.     To the contrary, she concluded that Forde's
    decision to testify was sufficiently attenuated from the
    unlawful wiretap so as to dissipate the taint of illegality.
    The motion judge found the following.      See Commonwealth v.
    Scott, 
    440 Mass. 642
    , 646 (2004).     Police arrested the defendant
    on January 10, 2006.    The physical evidence, however, pointed to
    two shooters:    a surveillance video recording from a nearby
    store showed two distinct muzzle flashes, and projectiles
    recovered from the victim's body came from two different
    weapons.   One of the investigators listened to the defendant's
    recorded telephone calls from the house of correction in an
    effort to identify the second shooter.     In one of these
    conversations, the defendant spoke to "C," who said that he was
    "laying low."    The defendant told "C" to "fall back . . . way
    back."   Police developed information that "C," also known as
    "Casino," had been with the defendant earlier in the evening on
    January 9, 2006, and had made cellular telephone calls to
    individuals at the Willard Street address immediately before the
    shooting, but were unable to identify "C."
    16
    Police then obtained a warrant for a wiretap of one of the
    internal telephones used to communicate between visitors and
    inmates at the house of correction.    This wiretap enabled police
    to listen to a conversation between the defendant and Gibbs.     In
    that conversation, the defendant and Gibbs mentioned "C," in a
    manner such that police believed "C" was Forde.     Police met with
    an assistant district attorney, who issued a summons for Gibbs
    to appear before the grand jury.     Police interviewed Gibbs
    before she appeared and testified.    She said that Forde had told
    her that he had driven the defendant to the Willard Street
    address on the evening of the shooting, where the defendant got
    out and Forde "saw sparks."    Gibbs later said that she would not
    have told the police about Forde's statements if they had not
    told her that they had listened to her jailhouse conversation
    with the defendant.   Right after Gibbs appeared before the grand
    jury, police obtained a warrant to arrest Forde.     The affidavit
    in support of the application for the warrant is five pages
    long, and contains no mention of the wiretap.     The information
    that Gibbs provided to the grand jury is mentioned in a single
    paragraph.
    In March, 2006, Forde was arrested on the warrant.      He was
    held without bail pending trial, and declined to speak with
    police.   In August, 2006, Forde changed his mind and decided to
    speak with police.    He told them about Brown's and the
    17
    defendant's involvement in the events of January 9 of that year.
    Forde said that he had changed his mind about testifying against
    the defendant and Brown because the defendant had sent him a
    number of threatening letters and Brown had broken a previous
    agreement in which he was to continue selling drugs and giving
    some of the money to Forde.
    In November, 2006, Forde testified before the grand jury
    about the events on the evening of January 9, 2006.   Following
    this testimony, the district attorney offered him a plea
    agreement under which Forde was to receive a sentence of eight
    months of incarceration (the amount of time he already had
    served), followed by a term of probation on the lesser included
    charge of accessory after the fact, and the Commonwealth agreed
    to enter a nolle prosequi on the murder charge after he
    testified.
    In denying the defendant's motion to suppress Forde's
    testimony, the motion judge determined that, although Forde
    decided to testify after the unlawful wiretap, his decision was
    sufficiently attenuated from the unlawful activity so as to
    dissipate the taint of illegality.   The judge credited the
    testimony of a State trooper that Forde likely would have been
    charged in conjunction with the shooting, regardless of the
    wiretap, and therefore determined that "the evidence does not
    support the conclusion that the decision to arrest Forde was
    18
    solely in order to gain his cooperation."     She also credited
    Forde's testimony that he chose to speak with the police, not
    based on his knowledge of the wiretap, but as a result of his
    belief that the defendant and Brown had "disrespected" him.
    ii.   Exclusionary rule and attenuation exception.     Under
    the doctrine of the "fruit of the poisonous tree," evidence
    seized as a result of an illegal wiretap, even where the
    defendant was not the direct target of the wiretap, generally
    may not be admitted at trial.     See Commonwealth v. Damiano, 
    444 Mass. 444
    , 453 (2005), citing Wong Sun v. United States, 
    371 U.S. 471
    , 487-488 (1963).   The primary purpose for the
    suppression of evidence under the exclusionary rule is to deter
    unlawful searches and seizures.     Commonwealth v. Lora, 
    451 Mass. 425
    , 438 (2008).   "The rule is calculated to prevent, not to
    repair.   Its purpose is to deter -- to compel respect for the
    constitutional guaranty in the only effectively available way --
    by removing the incentive to disregard it."     United States v.
    Calandra, 
    414 U.S. 338
    , 347 (1974), quoting Elkins v. United
    States, 
    364 U.S. 206
    , 217 (1960).     The exclusionary rule also
    functions to "preserve judicial integrity by disassociating the
    courts from unlawful [police] conduct."     Commonwealth v. Nelson,
    
    460 Mass. 564
    , 570-571 (2011).
    The attenuation doctrine provides an exception to the
    exclusionary rule under which evidence obtained by police as a
    19
    result of an unlawful search need not be excluded if the
    connection between the illegal search and the evidence is so
    attenuated as to dissipate any taint of illegality.
    Commonwealth v. Fredette, 
    396 Mass. 455
    , 458-463 (1985).     The
    theory of dissipation of the taint attempts to determine the
    point of diminishing returns at which the detrimental
    consequences of illegal police action become so attenuated that
    the deterrent effect of the exclusionary rule no longer
    justifies its costs.   See United States v. Ceccolini, 
    435 U.S. 268
    , 275 (1978), and cases cited; Damiano, 444 Mass. at 453-454;
    Commonwealth v. Sylvia, 
    380 Mass. 180
    , 183 (1980).
    To determine whether evidence that is discovered after an
    illegal search is sufficiently attenuated from that search so as
    to dissipate the taint, the court considers the length of time
    between the unlawful search and the discovery of the evidence
    (temporal attenuation); whether any circumstances intervened
    between the illegal act and the discovery of the evidence
    (intervening circumstances); and how integral the unlawful
    search was to the acquisition of the evidence (purpose and
    flagrancy of the unlawful conduct).   Fredette, 396 Mass. at 460.
    The burden is on the Commonwealth to establish that the taint
    has been sufficiently attenuated.   Damiano, 444 Mass. at 454,
    citing Fredette, supra at 459.
    20
    The defendant maintains that Forde's testimony should have
    been suppressed because, but for the illegal wiretap, the
    Commonwealth would not have had enough information to arrest
    him, and therefore Forde would not have been compelled to tell
    police what he knew in exchange for his release.   We do not
    apply a "but for" test in determining whether to suppress
    testimony obtained after an unlawful search.   Commonwealth v.
    Caso, 
    377 Mass. 236
    , 240 (1979).   Commonwealth v. Suters, 
    90 Mass. App. Ct. 449
    , 458 (2016).    Instead, we consider the above-
    noted three factors (temporal attenuation, intervening
    circumstances, and the purpose and flagrancy of the unlawful
    conduct) to determine "whether . . . the evidence . . . has been
    come at by exploitation of that illegality or instead by means
    sufficiently distinguishable to be purged of the primary taint"
    (citation omitted).   Wong Sun, 
    371 U.S. at 488
    .   Damiano, 444
    Mass. at 453.   Here, the factors support a determination that
    Forde's decision to testify was sufficiently attenuated from the
    illegal wiretap to dissipate any taint from the illegality.
    As to attenuation of time, in some circumstances, a lapse
    of time of as little as three hours from the illegal search to
    the decision to speak with police may be enough to dissipate the
    taint.   See Commonwealth v. Fielding, 
    371 Mass. 97
    , 114 (1976).
    See also Commonwealth v. Gallant, 
    381 Mass. 465
    , 466-467, 470
    (1980) (lapse of mere minutes between defendant's unlawful
    21
    arrest and decision to make statement, when considered in
    conjunction with other factors, was sufficient to dissipate
    taint).   In the circumstances here, however, the judge found
    that Forde's decision to speak to police seven months after the
    illegal wiretap, and five months after his arrest, weighed in
    favor of attenuation.   See Fielding, 
    supra.
       The five-month
    period between Forde's arrest and his decision to testify made
    it more likely that his decision to testify was an independent,
    free choice, and not a result of the unlawful wiretap or the
    arrest that followed.   
    Id.
    As to the existence of intervening circumstances, if a
    witness's decision to testify involves an affirmative choice,
    that choice may be an intervening circumstance sufficient to
    dissipate the taint of illegality.   Caso, 
    377 Mass. at 241
     ("[A]
    truly voluntary decision by a witness to testify should not be
    overridden unless the extreme circumstances of a particular case
    require the suppression of the testimony as a deterrent to . . .
    the unlawful conduct which resulted in the discovery of the
    witness").   See Commonwealth v. Lahti, 
    398 Mass. 829
    , 833-836
    (1986), cert. denied, 
    481 U.S. 1017
     (1987) (no attenuation where
    judge found close connection between defendant's involuntary
    statement and acquisition of witness testimony).
    In this case, the motion judge found that Forde's decision
    to testify, as Forde himself testified, was not based on
    22
    anything stemming from the illegal wiretap evidence.    Rather,
    his decision was based on the conduct of his accomplices.        He
    testified that he decided to speak with police because the
    defendant and Brown had "disrespected" him.      See Caso, 
    377 Mass. at 243
     (examining whether witness's decision to testify
    was act of free will).
    As to the purpose and flagrancy of the illegal search, we
    ask, first, whether the police performed the illegal act for the
    purpose of obtaining the evidence that the defendant seeks to
    suppress, and second, whether the police knew that their actions
    were illegal but proceeded anyway (flagrancy).     See Lahti, 
    398 Mass. at 833
    ; Commonwealth v. Parham, 
    390 Mass. 833
    , 843 (1984).
    Where police did not confront the witness with the
    illegally obtained evidence in order to coerce that witness to
    testify, this factor weighs in favor of allowing the testimony.
    See, e.g., Commonwealth v. Estabrook, 
    472 Mass. 852
    , 860-865
    (2015).   This is so even where the witness knew of the illegally
    obtained evidence.   See Parham, 
    390 Mass. at 843-844
    (defendant's confession not suppressed notwithstanding his
    knowledge of codefendant's illegally-obtained confession,
    because police had not confronted him with that statement).
    Similarly, we have declined to suppress a defendant's statement,
    made after an illegal arrest, where the police did not make the
    23
    illegal arrest for the purpose of obtaining the statement.     See
    Fielding, 
    371 Mass. at 114
    .
    Because the police did not conduct the illegal wiretap with
    the purpose of obtaining Forde's testimony, and did not confront
    Forde with the wiretapped conversations, the motion judge
    properly determined that the purpose and flagrancy of the
    illegal wiretap was sufficiently attenuated from Forde's
    decision to testify as to dissipate the taint of illegality.
    See Estabrook, 472 Mass. at 860-865; Caso, 
    377 Mass. at 241
    .    In
    this light, Forde's decision to testify stands in stark contrast
    to Gibbs's decision to testify, which was made as a direct
    result of being confronted with the illegal wiretap evidence.
    Police did not confront Forde directly or indirectly with the
    illegally wiretapped conversation in order to induce him to
    testify.   In short, police did not use information from the
    illegal wiretap to arrest and hold Forde in the house of
    correction in order to exert pressure on him to strike a deal.
    We conclude, therefore, that there was no error in the
    judge's determination that the taint of the illegal wiretap was
    sufficiently attenuated as to allow Forde's testimony to be
    introduced at trial.
    c.     Review pursuant to G. L. c. 278, § 33E.   We have
    reviewed the record pursuant to our obligation under G. L.
    24
    c. 278, § 33E, and discern no reason to reduce the verdict or
    order a new trial.
    Judgment affirmed.
    Order denying defendant's
    motion for a new trial
    affirmed.