The appellant in these cases seeks reversal of three different but interrelated convictions. He was apparently the companion in crime of one Eugene Frazier whose appeal from a robbery conviction was recently before us in Frazier v. United States.1 In No. 21,427, appellant attacks his conviction as codefendant with Frazier in the trial for the Frazier robbery. In No. 21,437, he seeks reversal of a conviction for a different robbery, of which Frazier was acquitted. No. 21,439 involves a conviction for carrying the dangerous weapon found on appellant at the time of his arrest for the latter robbery.
In both robbery trials, Frazier’s confession was improperly introduced into evidence against appellant.2 The Government confesses error as to these convictions and requests a remand for new trials. We delayed the remands for two reasons. Initially, since all three cases also raise issues concerning the admissibility of identification evidence under Stovall v. Denno,3 we held them for the court’s en banc consideration of the implications of Stovall in Clemons v. United States.4 In addition, in all three cases appellant challenges the admissibility of evidence claimed to be tainted fruit of Frazier’s confession, which was allegedly obtained in violation of Miranda v. Arizona.5 Since it thus appeared that the admissibility of evidence against appellant might turn on whether Frazier’s confession was a “poisonous tree,” we originally decided to await the results of the remand on the Miranda issue we ordered in Frazier. However, a recent Supreme Court decision clearly establishes that notwithstanding any past indications to the contrary, appellant has no standing to complain of any violation of *698Frazier’s Fifth Amendment rights.6 Accordingly, these cases are now ripe for decision.
I. No. 21,427
As the Government concedes, this conviction must be reversed because of the erroneous admission into evidence against appellant of his codefendant’s confession. The Government has also suggested that since the circumstances surrounding out-of-court eyewitness identifications of appellant are unclear from the record, appellant should be permitted at any new trial to challenge these witnesses’ in-court identifications, even though the court below originally rejected such a challenge. We accept that suggestion. However, in Frazier v. United States, supra, we upheld the admission of in-court identifications of appellant’s co-defendant Frazier made by the same witnesses, and this holding permits us to narrow the field of inquiry left open in the case at bar.
Since the witnesses, Reznick and Simpson, identified appellant before trial at the same single-suspect cellblock confrontation we found offensive to due process in Frazier, the question is whether their in-court identifications had an independent source.7 On this question, Frazier indicates that Reznick and Simpson had a good opportunity to observe their assailants at the time of the offense.8 They gave a reasonably accurate description of both robbers shortly thereafter. In these circumstances, we held that Reznick’s photographic identification of Frazier, made in the absence of prejudicial suggestivity long before the improper cellblock confrontation, established an independent source for his in-court identification.9 The record was confused as to whether Simpson also made a prior photographic identification of Frazier. Resolving the doubt in favor of Frazier, we rested our independent source finding for Simpson’s identification on another ground, which is not available to support his identification of appellant Bryson.10 Thus, under Frazier, the crucial question at any new trial will be whether Reznick and Simpson made reliable photographic identifications of appellant prior to the improper cell-block confrontations. The record leaves some doubt as to whether Bryson was ever identified from photographs.
Appellant also argues that the eyewitness identifications were obtained solely by exploitation of information learned from Frazier’s confession. If Frazier’s confession was obtained in violation of Miranda, he says the identifications were therefore tainted fruits. However, even if they are fruits of a poisonous tree, appellant is not entitled to have them excluded from evidence against him.
In Long v. United States,11 we held that a defendant had no standing to challenge fruits of a violation of another party’s Fifth Amendment rights. This conclusion was in accord with the longstanding rule that a testimonial privilege may be claimed only by the holder of the privilege.12 The same rule has also been applied to Fourth Amendment violations.13
Some recent Supreme Court opinions had appeared to portend a retreat from *699this rule, at least in Fourth Amendment cases and by extension in other constitutional cases as well.14 But these portents were nipped in the bud by Alderman v. United States.15 There, the Court held that only those whose own property or privacy has been invaded may obtain exclusion of the fruits of illegal wiretapping.16 It said:
We adhere * * * to the general rule that Fourth Amendment rights are personal rights which, like some other constitutional rights, may not be vicariously asserted. * * *
What petitioners appear to assert is an independent constitutional right of their own to exclude relevant and probative evidence because it was seized from another in violation of the Fourth Amendment. But we think there is a substantial difference for constitutional purposes between preventing the incrimination of a defendant through the very evidence illegally seized from him and suppressing evidence on the motion of a party who cannot claim this predicate for exclusion.17
Fifth Amendment rights are, a fortiori, personal rights, as the opinion of Mr. Justice Fortas in Alderman makes clear.18 His dissent on the standing question would allow a broader vicarious assertion of Fourth Amendment rights because the Fourth Amendment exclusionary rule serves primarily to enforce the blanket prohibition against unreasonable searches and seizures for the benefit of the general public.19 But he concedes that “only the person whose right has been violated can claim the protection of [the] * * * privilege [against self-incrimination].” 20 Indeed, the only jurisdiction which has broadly approved vicarious standing in Fourth Amendment cases denies such standing to complain of Fifth Amendment violations.21
Accordingly, in the light of Alderman, even if Frazier’s confession was illegally obtained, its fruits would not thereby be rendered inadmissible against appellant.
II. No. 21,437
This robbery conviction rests on Frazier’s pre-trial confession implicating appellant and on an in-court identification by the victim. Since the Government confesses error in the admission of the confession, the only question is whether the identification would be admissible at a new trial.22
*700Before trial, the witness, Mrs. Fine, identified appellant at a single-suspect cellblock confrontation and again in the Court of General Sessions under uncertain circumstances. Even if these confrontations violated due process, however, we are satisfied that Mrs. Fine’s in-court identification had an independent source. The robbery occurred in broad daylight and took several minutes, during which she stood face-to face with the robber. Immediately afterwards, the police showed her photographs of five men, not including appellant, and she could identify none of them. Subsequently, a police officer testified that he showed her five more pictures of Negro males, from which she unhesitatingly selected appellant’s photo. According to her own recollection, she looked through half a book of photos before spotting appellant, and then later identified his photo in other books. Whichever recollection is correct, not only does this prior photographic identification pass the due process test of Simmons v. United States,23 but in the circumstances it also establishes an independent source for her in-court identification.
III. No. 21,439
In the dangerous weapon conviction, the Government admits to no error. The only issue we need consider is appellant’s claim that the gun found on him at the time of his arrest should have been excluded because the arresting officers allegedly did not comply with Fed.R. Crim.P. 4(c) (3).24 That rule provides in pertinent part that in cases of arrest pursuant to a warrant,
[t]he officer need not have the warrant in his possession at the time of the arrest, but upon request he shall show the warrant to the defendant as soon as possible. If the officer does not have the warrant in his possession at the time of the arrest, he shall then inform the defendant of the offense charged and of the fact that a warrant has been issued. (Emphasis added.)
At a hearing on his motion to suppress the gun for lack of probable cause, appellant testified that police officers accosted him in a carry-out shop where he was drinking coffee. One called out, “Hey, boy, put your hands up.” Then, without further communication, the officers grabbed him, searched him, and charged him with carrying a gun. Appellant did not see anything in their hands at the time. The officers themselves did not testify, and the motion to suppress was denied because the arrest was made pursuant to a warrant citing appellant for armed robbery.
The validity of the warrant, which was based on Frazier’s confession in No. 21,-237, is not contested on appeal. But appellant now says his uncontroverted testimony establishes that the officers did not inform him of the warrant and the robbery charge at the time of the arrest as required by Rule 4(c) (3).
The Rule, its purpose, and its meaning are all best known to the draftsmen. Its application to a case such as this has not previously been argued in this court, and neither appellant nor the trial court thought of it below.25 Its purpose is veiled by the Advisory Committee’s laconic explanatory comment that it “safeguards the defendant’s rights” where the arresting officers are not in possession of the warrant they are executing. The *701mystery is enhanced by the Rule’s ostensible negative implication that if the police do have a warrant with them, they need not show it to the defendant or offer him any other information concerning the grounds of the arrest unless he asks.
In the instant case, the record does not affirmatively establish that the police did not have the warrant in their possession. Nor does it show that the police did not provide the required information immediately subsequent to the arrest. Thus, because appellant did not press this claim below, there is substantial doubt as to how or whether the Rule was violated. We think it inappropriate on such a record to attempt to sort out the Rule’s ambiguities or to decide whether and when it might be enforced by an exclusionary rule. Accordingly, we confine our inquiry to the question of possible prejudice to substantial rights of appellant which the Rule might have been designed to protect.
The information provision of the Rule might serve three different purposes. First, it might prevent any uhexplained detention of a lawfully arrested defendant. Since upon discovery of the gun, the officers promptly charged appellant with carrying a dangerous weapon, he suffered no such injury. Second, by informing him of the warrant and charges against him, the Rule might safeguard an arrestee’s privilege against self-incrimination. Appellant did not, however, incriminate himself.
Finally, the Rule might be designed to prevent unexplained arrests, thus insuring against the possibility that a suspect will, out of ignorance, resist a lawful arrest. If so, the Rule must be read to require the police to announce their authority before making an arrest. Unlike 18 U.S.C. § 3109, which commands officers executing a search warrant to announce their authority and purpose and be refused admittance before breaking into a private home,26 the language of the Rule does not expressly require a prior announcement.27 Moreover, the statute protects the substantial interests of the privacy and physical integrity of the home, which are not threatened by unexplained arrests. Yet even the statutory requirements admit of an exception for exigent circumstances;28 and in the instant case the police may well have had reasonable grounds to fear that appellant, who was wanted for armed robbery, was armed. If so, thy could search him for a weapon incident to his arrest without first complying with Rule 4(c) (3), even if the Rule ordinarily envisages a prior warning.29 In afty event, appellant was unlikely to, and did not in fact, resist the arrest, which was made by five police officers. Absent the need for a broad exclusionary rule to enforce Rule 4(c)
*702(3) — a question we leave open for a case which properly presents it — we can find no reason to reverse his conviction.
No. 21,427: Reversed.
No. 21,437: Reversed.
No. 21,439: Affirmed.
These opinions were prepared prior to June 20, 1969 and are issued pursuant to the judgment of this Court entered on June 21, 1969.
. 136 U.S.App.D.C. -, 419 F.2d 1161 (March 14, 1969).
. Kramer v. United States, 115 U.S.App. D.C. 50, 317 F.2d 114 (1963); Jones v. United States, 119 U.S.App.D.C. 284, 342 F.2d 863 (1964).
. 388 U.S. 293, 87 S.Ct. 1967, 18 L.Ed.2d 1199 (1967).
. 133 U.S.App.D.C. 27, 408 F.2d 1230 (decided December 6, 1968) (en banc).
. 384 U.S. 436, 86 S.Ct. 1602, 16 L.Ed. 2d 694 (1966).
. Alderman v. United States, 394 U.S. 165, 89 S.Ct. 961, 22 L.Ed.2d 176 (1969).
. Frazier v. United States, supra note 1, p. 1170; Clemons v. United States, supra note 4, 408 F.2d, at p. 1237.
. Frazier v. United States, supra note 1, p. 1170.
. Id.
. Id. p. —. In a face-to-face confrontation shortly after his arrest, Frazier unequivocally identified Simpson as the man he had robbed.
. 124 U.S.App.D.C. 14, 18, 360 F.2d 829, 833 (1966).
. 8 Wigmore, Evidence §§ 2196, 2270 (Rev’d ed. 1961); Bowman v. United States, 350 F.2d 913, 915-916 (9 Cir. 1965), cert. denied, 383 U.S. 950, 86 S.Ct. 1209, 16 L.Ed.2d 212 (1966); Sachs v. Government of the Canal Zone, 176 F.2d 292, 296 (5 Cir.), cert. denied, 338 U.S. 858, 70 S.Ct. 100, 94 L.Ed. 525 (1949).
. Wong Sun v. United States, 371 U.S. 471, 491—492, 83 S.Ct. 407, 9 D.Ed.2d 441 (1963).
. Simmons v. United States, 390 U.S. 377, 390, 88 S.Ct. 967, 19 L.Ed.2d 1247 n. 12 (1968); Berger v. New York, 388 U.S. 41, 55, 87 S.Ct. 1873, 18 L.Ed.2d 1040 (1967); Hoffa v. United States, 387 U.S. 231, 233, 87 S.Ct. 1583, 18 L.Ed. 2d 738 (1967). See also Ellis and Watkins v. United States, 135 U.S.App.D.C. 35, 416 F.2d 791 (decided April 30, 1969), p. 798, n. 11.
. Supra note 6.
. Under Alderman a person has standing to object to evidence illegally obtained by wiretapping only if he was himself overheard or if the overheard conversation took place on his property. 89 S.Ct. 961.
. Id., 89 S.Ct. at 966-967.
. Id., 89 S.Ct. 961.
. The Fourth Amendment, unlike the Fifth, is couched in terms of a guarantee that the Government will not engage in unreasonable searches and seizures. It is a general prohibition, a fundamental part of the constitutional compact, tbe observance of which is essential to the welfare of all persons. Accordingly, commentators have urged that the necessary implication of the Fourth Amendment is that any defendant against whom illegally acquired evidence is offered, whether or not it was obtained in violation of his right to privacy, may have the evidence excluded.
Id., 89 S.Ct., at 981 (opinion of Fortas, J., dissenting in part).
. Id. at 983.
. See People v. Varnum, 66 Cal.2d 808, 59 Cal.Rptr. 108, 427 P.2d 772 (1967). Cf. People v. Martin, 45 Cal.2d 755, 290 P.2d 855 (1955).
. Our holding that appellant cannot object to the fruits of a violation of Frazier’s Fifth Amendment rights disposes of the contention that the identification is an inadmissible fruit of Frazier’s confession.
. Supra note 14. The test is whether “the photographic identification procedure was so impermissibly suggestive as to give rise to a very substantial likelihood of irreparable misidentification.” 390 U.S. at 384, 88 S.Ct. at 971.
. Appellant seeks to construct a lengthy trial of taint leading from Frazier’s confession to the gun found on him at the time of his arrest. Even if the taint was not dissipated by the time it reached the gun, however, appellant has no standing to complain of it. Alderman v. United States, supra note 6.
. When defense counsel made his motion to suppress, he apparently did not know that the arrest had been made pursuant to a warrant. He had learned of the warrant, however, by the time of the hearing on his motion.
. The officer may break open any outer or inner door or window of a house, or any part of a house, or anything therein, to execute a search warrant if, after notice of his authority and purpose, he. is refused admittance or when necessary to liberate himself or a person aiding him in the execution of the warrant.
See also Masiello v. United States, 113 U.S.App.D.C. 32, 304 F.2d 399 (1962); Hair v. United States, 110 U.S.App.D.C. 153, 289 F.2d 894 (1961).
. The Rule says only that if the arresting officer is not in possession of the warrant, “he shall then” give the required information. (Emphasis added.) Whether “then” means “at that time” or “subsequently” or nothing at all, it does not in terms make the information a condition precedent to a valid arrest.
. See Sabbath v. United States, 391 U.S. 585, 591, 88 S.Ct. 1755, 20 L.Ed.2d 828 n. 8 (1968); Ker v. California, 374 U.S. 23, 39-40, 83 S.Ct. 1623, 10 L.Ed. 726 (1963) (opinion of Clark, J.); id. at 47, 83 S.Ct. at 1636 (opinion of Brennan, J.); Gilbert v. United States, 366 F.2d 923, 931-932 (9 Cir. 1966), cert. denied, 388 U.S. 922, 87 S.Ct. 2123, 18 L.Ed 1370 (1967).
. Cf. Warden, Maryland Penitentiary v. Hayden, 387 U.S. 294, 298-300, 87 S.Ct. 1642, 18 L.Ed.2d 782 (1967); Terry v. Ohio, 392 U.S. 1, 27-30, 88 S.Ct. 1868, 20 L.Ed.2d 889 (1968); id. at 33, 88 S. Ct. at 1886 (opinion of Harlan, J.).