This case comes before us on an interlocutory appeal by the Commonwealth from the decision of a Superior Court judge allowing the defendant’s motion to suрpress a revolver and ammunition discovered and seized during the course of a warrantless search of the defendant’s apartment. See G. L. c. 278, § 28E. After hearing oral tеstimony from a number of witnesses, the judge made subsidiary findings of fact from which he concluded that the defendant did not voluntarily consent to the *558 search and that it was unlawful. We hold that there was no error.
At approximately 2:30 p.m. on July 3, 1977, Boston police Officers Newman Stone and Henry Keskula went to 45 St. Botolph Street in Boston in response to a cаll. There they spoke with one Paul Ford, who directed them to an inner foyer on the first floor where they found the body of a person later identified as Joseph Goode (victim). Ford told the officers the following. The victim had answered a knock on the door to his apartment. Thereafter, Ford heard several gunshots. He went to investigate, fоund the victim’s body, and saw a man ascending the stairs. Ford described the man to the officers as a black male of average height and build, in his early fifties, and wearing green work clothes. 1
After conversing with Ford, Officers Stone and Keskula went upstairs and knocked on several doors. The defendant, who matched Ford’s description, came to the dоor of his third-floor apartment in response and was subjected to a pat-down search by the officers. Then, while Officer Stone remained with the defendant, Officer Keskula fetched Ford from downstairs. Ford identified the defendant as the man he had seen ascending the stairs after the shooting. The officers thereupon arrested the defendаnt, handcuffed him, and informed him of his rights under
Miranda
v.
Arizona,
The judge further found that the following occurred after the defendant was informed of his rights. In response to a question by Officer Keskula, the defendant indicated willingness to talk about the case. The defendant denied knowledge about a gun. While the arrest and *559 questioning were going on, several uniformed officers, some with drаwn guns, were in and about the defendant’s one-room apartment looking for a gun which might be in plain view. Sometime later, Detectives Edward Caruso and John Reilly arrived in the roоm, and all the uniformed officers then present left.
After learning that the defendant had been apprised of his rights under Miranda, Caruso asked him where the gun was. The defendant replied, in substаnce, that he had no gun but that Caruso was free to look around. Caruso conducted a visual search of the room without result. Caruso then came upon a small footlocker (trunk) at the foot of the bed. He placed it on the bed, discovered that it was locked, and asked the defendant for a key. The defendant initially denied having a key. Caruso then stated he would obtain a search warrant and break the trunk open. At this point, the defendant admitted that he had a key for the trunk among several hanging on his belt. Caruso took the key and attempted to open the trunk but had difficulty in doing so. The defendant offered to help Caruso, but Caruso eventually opened the trunk without assistance. Caruso found a .32 caliber revolver and several rounds of live ammunition in the trunk.
At no time was the defendant told that he could refuse to consent to the search of his trunk. Thе defendant had been drinking but he was capable of understanding the questions and advice given him by the arresting officers. According to testimony by a court psychiatrist, the defendant "was lower than average but not considerably lower than average” in intelligence.
The defendant was indicted for carrying an unlicensed firearm and for assault with intent tо murder and murder. He filed a pretrial motion to suppress the revolver and ammunition found by Detective Caruso in the trunk. After a hearing, the judge found the facts which are summarized аbove and concluded that the defendant did not voluntarily consent to the search of the trunk. Finding no *560 other basis for upholding the warrantless search, the judge granted the motion to suppress. The Commonwealth applied to a single justice of this court for an interlocutory appeal under G. L. c. 278, § 28E. The single justice allowed the application and reported the case to the full court without decision.
1. We first emphasize the limited nature of our review in cases of this kind. In assessing claims of insufficient waiver оf the right to silence established by
Miranda
v.
Arizona, supra,
we have repeatedly stated that we will not disturb subsidiary findings of fact made by a trial judge except for clear error.
Commonwealth
v.
Taylor,
2. When the Commonwealth relies on consent as the basis for a warrantless search, it must demonstrate "сonsent unfettered by coercion, express or implied,... [which is] something more then mere 'acquiescence to a claim of lawful authority’ [citation omitted].”
Commonwealth
v.
Walker,
Tested by these principles, we are satisfied that in the circumstances of this case the issue of voluntariness was capable of rational resolution either way. The defendant’s claim that his apparent consent was involuntary should be carefully scrutinized to avoid giving him an unfair advantage. See
United States
v.
DiPrima,
So ordered.
Notes
There was much additional testimony relative to Ford’s conversation with Stone and Keskula, but the judge made no findings on the basis thereof. In any event his failure to make such findings does not affect the ruling on the motion to suppress.
The defendant does not contend that the arrest was in any way illegal so аs to taint the subsequent search. See
Commonwealth
v.
Boswell,
Nothing we have said here is inconsistent with our decision in Commonwealth v. Ortiz, ante 349 (1978). In that case we reversed the finding by a trial judge that a warrantless search of an automobile was unreasonable. Id. at 358. We did so, however, because the judge applied too rigid a test for the existence of exigent circumstances. Id. at 356-357. Ortiz therefore exemplifies the situation referred to in the text where we disagree with the legal conclusion to be drawn from subsidiary findings.
