In November, 1975, Neil Parham was tried before a jury and found guilty of murder in the first degree, armed robbery, and armed assault with intent to rob. Par-ham’s convictions were the result of indictments stemming from a slaying on October 14, 1974, in which Parham and two companions 1 were alleged to have stolen a car and followed a taxicab from downtown Boston until its arrival on Sunnyside Street in Jamaica Plain where it discharged the passengers. Parham and his companions attacked the taxicab driver and one passenger. In the ensuing melee, the victim, that passenger, was fatally stabbed. The booty from this episode was four one dollar bills.
Parham received a mandatory sentence of life imprisonment on the murder charge, with concurrent terms of seven to ten years on the other charges, on November 21, 1975. The case is before us for review pursuant to our powers under G. L. c. 278, § 33E, following the allowance of Par-ham’s petition to file a late claim of appeal by a single justice of this court.
Parham asserts that the following errors require reversal of his convictions: (1) the admission in evidence of his confession absent a showing by the Commonwealth of a voluntary, knowing, and intelligent waiver of rights secured to him by
Miranda
v.
Arizona,
Of the issues enumerated above, only the first, relating to Miranda standards and voluntary confessions, is founded upon exceptions saved at trial.
2
Review of all other matters which Parham raises for the first time on appeal, is limited to a determination whether the alleged errors created a substantial risk of a miscarriage of justice.
Commonwealth
v.
Atkins,
For the reasons stated below, we conclude that there was no error as to the Miranda and voluntariness issues, nor does this case present an appropriate occasion for the exercise of our powers under G. L. c. 278, § 33E.
1. Preliminary events. The record reveals the following sequence of events leading to Parham’s arrest. On a Sunday afternoon, in February, 1975, Boston police Detective Francis J. McCarthy noticed Parham on a Roxbury street carrying a canvas bag with an object protruding from it. Detective McCarthy stopped Parham, identified himself as a police officer, and recognized the object as a “dent puller.” He asked Parham to accompany him to the police station because McCarthy was not certain that the dent puller was a burglarious implement. Parham accepted McCarthy’s invitation.
*836 In the police cruiser on the way to the police station, Parham gave Detective McCarthy his brother’s name. McCarthy, who was familiar with Parham’s family, then realized who Parham actually was, and that there existed an outstanding murder warrant for his arrest. He so informed Parham, who was also aware of the warrant and of the police visits to his mother’s home in connection with the murder warrant.
Detective McCarthy placed Parham under arrest for murder as soon as the vehicle stopped outside the police station. Parham surrendered a gun which he had been carrying. McCarthy attempted to recite Miranda warnings, but was interrupted several times by Parham, who begged McCarthy for a “break” and told McCarthy he had tried to reach him concerning the murder warrant, but had been unable to do so.
Once inside the station, McCarthy recited the Miranda rights in full, and asked Parham if he would be willing to speak to Detective Peter J. O’Malley, who was also investigating the Sunnyside Street murder. Parham agreed to do so. Detective O’Malley interviewed Parham, at some point showing him some papers connected with the investigation. There is some conflict in the record as to whether Parham was shown only the warrant for his arrest or another defendant’s statement, and this will be discussed later.
Parham agfeed to permit a tape recording of his version of the incident on Sunnyside Street. Detective O’Malley repeated Miranda warnings at least once and possibly twice, before and at the outset of the taping. Detective O’Malley told Parham that an attorney from the Roxbury Defenders Committee would be available to him for counselling that day if he so desired, and that when he was arraigned, the court would appoint a “good lawyer,” one with “at least ten years’ experience.” At some point prior to taping, Parham requested that he be allowed to telephone his sister. Her line was then busy but the call was placed later and Parham spoke to his sister subsequent to the tape recording.
*837 The second side of the tape never recorded, probably due to a mechanical failure. The first side of the tape was played at trial. Parham’s statement reveals his companions’ design to steal an automobile, their plan to follow the taxicab to steal the driver’s money, and the incident on Sunnyside Street. Parham’s version of the events, if believed, reflected knowledge of the plan, his recalcitrant participation, knowledge that his friends carried pocket knives, and a reluctance on Parham’s part to venture beyond the stolen vehicle to the area where the stabbing and robbery occurred. Parham admitted to waiting for one of the participants until he ran back to the car and then they both sped away.
2. The suppression hearing. Parham alleges error in the trial judge’s refusal to suppress his statement on the theory that there was no valid waiver of his Miranda rights and that the confession cannot, considering the totality of the circumstances, be considered voluntary. Parham asserts that he was “herbed up” (intoxicated by marihuana), and thus unable to make a meaningful and intelligent waiver of his Miranda rights. He avers that the police reference to a “good lawyer” to be appointed at arraignment led him to believe an attorney from the Roxbury Defenders Committee could not adequately assist him in the police station. He states that he was denied access to the telephone until making his statement. Further, Parham contends that, owing to the inherently coercive atmosphere of the police station, his lack of education, and the presence of four police officers during questioning, the trial judge erred in concluding that he made a knowing and intelligent waiver of Miranda warnings. Alternatively, but on the same alleged factual basis, Parham asserts that his confession was not a free and voluntary act.
The trial judge made no findings of fact in denying Parham’s motion to suppress. Although they would have proved helpful, their omission is not fatal, for his conclusion is reviewable as a matter of law. Although it would have been prudent for the judge to make findings of fact, we think
*838
that the judge’s decision to admit the defendant’s statements renders the judge’s conclusions as to voluntariness “clearly evident from the record.”
Commonwealth
v.
Brady,
In reviewing Parham’s contentions, we are aware that two separate questions are before us: first, whether the Miranda requirements have been scrupulously met, and a knowing and intelligent waiver of them made; and second, whether in the totality of the circumstances, apart from formal compliance with
Miranda,
the confession given was the product of a free will, and not the result of coercion or intimidation.
Commonwealth
v.
Williams,
Testimony at the suppression hearing tended to show the following facts surrounding Parham’s confession. First, and significantly, Parham was well aware at the time of his arrest of the existence of the murder warrant. Secondly, the testimony of both police officers, at least one of whom had extensive drug enforcement experience, indicated that
*839
Parham did not appear to be under the influence of drugs. They made inquiry concerning his use of narcotics and did not observe signs of intoxication or illness. During the interrogation, Parham made no mention of smoking marihuana. It was only at the suppression hearing that Parham asserted that the influence of marihuana precluded a knowing and intelligent waiver of his rights. Ordinarily, the police are entitled to rely on a suspect’s outward behavior and assurances of sobriety and understanding. See
Commonwealth
v.
Garcia,
In addition, there is no evidence in the record which supports Parham’s allegation that he was denied use of the telephone until he made his statement. To the contrary, police attempted to reach his sister, but the line was busy. Thereafter, they assured Parham that another attempt to reach her would be made, and this was in fact accomplished. This evidence does not suggest the kind of intentional interference which would render the defendant’s statements inadmissible. See
Commonwealth
v.
Jones,
There was evidence tending to show that the arresting and interrogating officers recited Miranda warnings on at least two occasions, although Parham’s memory of such recital, and his indication that he understood those warnings, appeared dim at the suppression hearing. The trial judge was free to disbelieve Parham’s statements, particularly be *840 cause he testified to some recollection of mention of rights, and we will not disturb this implicit finding on appeal. Strict compliance with formal Miranda warnings coupled with the evidence of Parham’s knowledge of the existence of the warrant, permits the conclusion that rather than prolong the agony of the criminal investigation, Parham chose to waive his constitutional rights.
Further, police remarks concerning the availability of an attorney from Roxbury Defenders Committee, followed by the appointment of an attorney at arraignment, cannot fairly be said to have been in denigration of Parham’s right to counsel.
We find no error in the trial court’s conclusion that Par-ham knowingly and intelligently waived his Miranda rights, and that police scrupulously respected those rights. In all the circumstances, the prophylactic purpose of the Fifth Amendment’s exclusionary rule — to discourage coercive or improper police conduct — has been met. Commonwealth v. Garcia, supra at 430.
The next issue is whether the confession itself was a free and voluntary act. This inquiry focuses on no particular set of facts, but leads us to consider whether, under the totality of relevant circumstances, the confession was the product of physical or psychological coercion, or that it can be said that the confession was a free and voluntary act, and not the product of coercion.
Commonwealth
v.
Mahnke,
Although we have recognized an inherently coercive element within the police station setting, that alone is not enough to support a finding of involuntariness.
Commonwealth
v.
Bookman,
3.
Failure to instruct the jury on voluntariness.
Under Massachusetts’ “humane practice,” a trial judge, having made an initial determination concerning the voluntariness of a confession, must instruct the jury to pass on the voluntariness of the confession if voluntariness is a live issue at trial.
Commonwealth
v.
Alicea,
*842
The present case, involving no substantial testimony on the issue of voluntariness or intoxication, fails to support a determination of grave prejudice or a miscarriage of justice. Parham’s trial counsel in final argument made only fleeting reference to this issue. He made no reference to voluntariness per se, but only in connection with assessing the police officers’ credibility. Trial counsel also made reference to the police’s obligation to inquire about drug use while interrogating Parham, and to comply with
Miranda.
Nevertheless, those references are not sufficient to indicate to the judge that his attention ought to be directed to passing on the voluntariness question. The references to voluntariness were not sufficiently focused so to make the question a “live issue.” See
Commonwealth
v.
Tavares,
4.
Failure to suppress the confession as the “fruit” of an illegally obtained confession.
Parham asserts that his confession should be suppressed as the product of the illegally obtained and subsequently suppressed statement of Lawrence Taylor, who was also charged in connection with the Sunnyside Street slaying.
Commonwealth
v.
Taylor,
The test of the admissibility of a confession which is the fruit of an earlier illegality, announced in
Wong Sun
v.
United States,
Here the evidence was sufficient to support a finding that the primary taint, if any, had been purged, though we deprecate again the absence of written findings. First of all, it is arguable whether the Taylor statement was used in obtaining Parham’s statement. Parham alleges that he saw certain investigative papers concerning Sunnyside Street, but merely “guessed” that he saw Taylor’s statement. The police testified that Parham was not shown Taylor’s statement, but rather Parham’s own arrest warrant. During the taping of Parham’s confession, only a passing reference was made to any statement given by another involved in the incident, and this was done in such fashion as to indicate that the police had not laid the Taylor statement before Parham or made other use of it. The police testified that Parham referred to Taylor and another suspect at the close of the interview, not before or during it. There is some indication that Parham had been independently implicated by Taylor’s girl friend, apart from Taylor’s statement. In short, the record does not indicate that Parham’s statement was the result of exploitation of the Taylor statement.
As to the other factors, we have already noted compliance with
Miranda,
although that alone would not cure any taint.
Commonwealth
v.
Bradshaw, supra
at 258. However, notwithstanding that Parham confessed shortly after his arrest, he was not denied time in which to consider his decision to speak with police. Parham’s knowledge of the existence of a warrant for his arrest may have motivated him to confess rather than engage in a protracted game of cat and mouse with the police. There was testimony from Detective McCarthy that Parham had said, “I want to give myself up” and, “I’m tired of running.” Additionally, some two months had passed between the giving of the Taylor statement and Parham’s confession. Finally, the police conduct in question here hardly can be said to be “flagrant misconduct.” The police could not have been aware at the time Parham made his statement that the Taylor statement,
*844
if it was utilized at all, would later be suppressed. We have discussed on several occasions that the exclusion of evidence purportedly resulting from illegally obtained evidence necessitates a balancing of the deterrent purpose of the exclusionary rule and the public interest in prosecuting crime, and have noted that where there is a truly voluntary decision to testify, or, as in this case, to confess, that decision should not be overridden unless extreme circumstances require suppression to deter further resort to the unlawful conduct.
Commonwealth
v.
Caso,
5. Ineffective assistance of counsel. Parham asserts that his trial counsel’s failure to perfect his appeal left him “completely abandoned,” that such failure to file a timely appeal renders counsel’s representation per se incompetent, and that exhibits were lost through the incompetence of trial counsel, thereby weakening Parham’s ability to present an effective record for appellate review. We disagree. The record does not support Parham’s assertion that trial counsel left him “completely abandoned” on appeal. Rather, the record indicates trial counsel’s appellate strategy would focus on the “fruits of the poisonous tree” theory discussed above, inasmuch as counsel’s letter dated March 2, 1978, to Parham states that since an appellate decision in favor of Taylor had been rendered, the time to move forward with Parham’s appeal had arrived. It would have been desirable for counsel to inform Parham at an earlier date and with greater clarity concerning this strategy. We do not approve of counsel’s failure to file a timely appeal but we cannot say that counsel’s actions amount to “complete abandonment.”
*845
Parham’s assertion of per se incompetence does not present the correct legal standard for review of effective assistance. Rather, that standard is whether counsel’s conduct falls “measurably below that which might be expected from an ordinary fallible lawyer” and whether that conduct had caused prejudice by depriving defendant of an otherwise available, substantial ground of defense.
Commonwealth
v.
Saferian,
6. Error in jury instructions concerning application of the felony-murder rule. Parham asserts error in the trial judge’s failure to instruct the jury that a finding that Par-ham had knowledge that his coparticipants were in possession of a dangerous weapon was a prerequisite to application of the felony-murder rule.
Although the felony-murder rule has been much discussed since Parham’s convictions (see
Commonwealth
v.
Currie,
7. Review under G. L. c. 278, § 33E. The entry of a verdict of a lesser degree of guilt pursuant to our power under G. L. c. 278, § 33E, is not required. We have made a careful review of the record and we are persuaded that the result reached at trial was consonant with justice.
Judgments affirmed.
Notes
Only Parham’s appeal is before us. Appeals concerning the other participants have been disposed of. See
Commonwealth
v.
Brown,
This case was tried before the Massachusetts Rules of Criminal Procedure became effective. Under rule 22,
Cf.
Commonwealth
v.
Tavares,
