¶1Opinion by
¶2Appellant contends that evidence seized by the police pursuant to a legally sufficient search warrant should have been suppressed because the warrant was improperly executed.
¶3On August 20,1972, the Security Administrator of the Franklin Institute discovered that four antique rifles were missing from a display case. The rifles ranged in age from 120 to 150 years. On September 8, 1972, detectives from the District Attorney’s office went to the apartment of John Clemson, the appellant. Prior to approaching Clemson’s apartment, the detectives informed the manager of the apartment complex in which appellant lived of their identity and purpose. He gave them a key to the apartment. One of the detectives knocked on the apartment door and announced “Police, we have a search warrant.” The detective knocked a second time and again announced his identity and purpose. Following the second knock, the detectives waited ten seconds, and then used the passkey to gain entrance to the apartment. Upon entering, the police observed appellant’s wife emerging from one of the bedrooms and appellant’s daughter asleep on the living-room couch. The police identified themselves to Mrs. Clemson, showed her the warrant, and proceeded to search the apartment. The detectives discovered four antique rifles wrapped in a gray blanket under the appellant’s bed. A jury found appellant guilty of receiving stolen goods.
¶4It is well-established that police officers are required to give notice of their identity and purpose before attempting to enter private premises. Commonwealth v. Newman, 429 Pa. 441, 240 A.2d 795 (1968).
¶5There is a second well-established rule in regard to the propriety of forcible entry on the part of the police. Even where the police duly announce their identity and purpose, as the detectives did in the present case, forcible *195entry is “still unreasonable and hence violative of the Fourth Amendment if the occupants of the premises . . . are not first given an opportunity to surrender the premises voluntarily.” Commonwealth v. DeMichel, supra, at 561, 277 A.2d at 163. See also, United States ex rel. Ametrane v. Gable, 276 F. Supp. 555 (E.D. Pa. 1967). The issue presented in this case is reduced, therefore, to whether the ten-second delay afforded the occupants of appellant’s residence a sufficient opportunity to surrender the premises voluntarily.
¶6In the absence of exigent circumstances, a ten-second delay prior to entry provides an insufficient opportunity for the occupants to voluntarily surrender the premises. Our Supreme Court has observed that “a mere twenty second delay in answering the door cannot constitute support for a belief that evidence was being destroyed (or in terms of 18 U.S.C. §3109, a refusal of admittance). Commonwealth v. Newman, supra, at 448. (Emphasis added). Commonwealth v. DeMichel, supra, involved a factual pattern very similar to the situation presented by the instant case. There the police began to break down the front door of appellant’s house five to fifteen seconds after announcing their presence and purpose. The police had observed appellant’s wife peering through a window *196in close proximity to the front door. The wife claimed that the delay was occasioned by her having to get dressed. The Court stated: “Regardless of the truth of her testimony, it serves to illustrate that a five to fifteen second delay was insufficient for the police to have formed a reasonable belief that the occupants of appellant’s house did not intend to permit peaceable entry.” 442 Pa. at 562, 277 A.2d at 164. In the present case, the detectives did not see anyone in the apartment and heard no sounds emanating from inside. Thus, they were unable to formulate a belief as to whether the apartment was occupied at all. Under these circumstances, a ten second delay is not reasonable. As was noted in DeMichel, an occupant can have “countless legitimate reasons” for not answering the door within a five to fifteen second period. In this case, the appellant’s daughter was asleep on the couch and appellant’s wife was emerging from the bedroom at the time the detectives entered the apartment. There was no reason for the police to believe that the occupants would have refused their admittance.
¶7The judgment of sentence is vacated and the case remanded for a new trial.
¶8. The announcement requirement is waived if exigent circumstances are present. Noncompliance may be justified if the occupant is fleeing or attempting to destroy evidence, or if the police are virtually certain that the occupant is already aware of their purpose. See, Ker v. California, 374 U.S. 23 (1963); Miller *194v. United States, 357 U.S. 301 (1958); Commonwealth v. DeMichel, 442 Pa. 553, 277 A. 2d 159 (1971) ; Commonwealth v. Newman, supra. The mere fact that the evidence being' sought is easily destroyed, however, does not suspend the requirement. There must be some affirmative indication to support a belief that evidence is being destroyed. See, Commonwealth v. Dial, 445 Pa. 251, 285 A. 2d 125 (1971).
¶9. 18 U.S.C. §3109 reads in relevant part: “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. . . .”
¶10. There are no exigent circumstances in the present case. In his opinion, the trial judge states that there was no justification to believe that evidence was being destroyed. The lower court does state that because the police were looking for rifles, they could have concluded that their lives were endangered and thus were justified in entering the apartment. Appellant charges that this reasoning is “somewhat curious” in light of the fact that the rifles being sought were antiques. The Commonwealth’s brief responds: “Be that as it may, it is not necesary in order to uphold the order of the Court below ... to find that ‘exigent circumstances’ existed. Instead, it is the Commonwealth’s position that in the instant case, the delay by the police of ten seconds before they used the key to open the door was completely reasonable and, under the circumstances totally in compliance with the requirements of the Fourth Amendment.”