This is the second time this case has been before us. The central issue in both appeals has been the legality of the appellant’s arrest in his residence by FBI agents acting without a warrant but with probable cause to arrest. Appellant in his first appeal sought to overturn his conviction on the ground that his arrest contravened the Fourth Amendment. Subsequent to the filing of this appeal this court decided
United States v. Prescott,
We hold that the district court’s finding is clearly erroneous and that either Prescott or identical pre-Prescott law is applicable to this case with the result that appellant’s warrantless arrest was invalid.
Therefore, we reverse the appellant’s conviction.
I.
FACTS
The facts are simple and straightforward. On November 8, 1977, at about 3:15 p. m., appellant robbed the San Francisco Federal Savings and Loan Association at the Valley Fair Shopping Center in San Jose. Mixed with the money taken by the appellant were several bait bills. During the robbery, appellant was photographed by a bank surveillance camera.
The same afternoon, two FBI agents began to investigate the robbery. They learned that one week earlier a man matching the description of the robber had been stopped by a deputy sheriff in Santa Clara County on suspicion of “casing” a bank. The man, whose driver’s license indicated that he was Jesse William Blake and was living on Mann Avenue in Union City, had been driving a tan 1976 Monte Carlo belonging to Budget Rent-A-Car in Oakland. The deputy sheriff had searched the car and discovered a pellet pistol under the seat. Also, a computer arrest check had revealed that at the time of a previous arrest Blake had given his address as 2713 Dowe Avenue in Union City.
The next day, November 9, FBI agents compared the bank surveillance photograph with the driver’s license photograph of Jesse William Blake and determined that the bank robber was the same man who had been stopped by the Santa Clara deputy sheriff. They then went to the Budget Rent-A-Car in Oakland and found that the tan 1976 Monte Carlo presently was rented to a Carol Blake, whose address was in Hayward. When interviewed, Carol Blake told the agents that the man in the bank surveillance photograph was her husband, Jerry Blake, who, she said, was living with *733 another woman on Dowe Street in Union City. The agents then went to the Dowe Street address, arriving there sometime between 1:30 p. m. and 2:15 p. m., but observed that the Monte Carlo was not there. Leaving an officer from the Union City Police Department to watch the house, the agents went to the Mann Avenue address given on Blake’s driver’s license and then to the Union City Police Department. At about 2:30 p. m., the officer at the Dowe Street residence reported by radio that Blake and a woman had arrived in the Monte Carlo and had entered the house.
Without attempting to secure an arrest warrant, the agents then returned to the Dowe Street residence with several Union City police officers. The police personnel positioned themselves around the house, and one of the agents knocked at the door, announcing that he was from the FBI and was looking for Jerry Blake. When knocking brought no response, the agent began to kick the door. A woman then opened the door. The agent pulled her out onto the step, and both agents entered the house. They found appellant emerging from a bedroom and immediately placed him under arrest.
The agents searched appellant and found in his pocket a bait bill which had been taken from the bank. They then took appellant to the Union City police station and, after advising him of his Miranda rights, commenced to question him. Appellant at first denied knowledge of the robbery, but confessed after being confronted with the surveillance photograph and the bait bill. He also consented to a further search of the house, which turned up three more bait bills.
Before trial, appellant moved to suppress his confession and the bait bills on the ground that the agents had violated his Fourth Amendment rights by arresting him in his home without a warrant. The motion was denied, and the evidence was admitted at trial. Over his objection, three bank employees also identified appellant as the robber. The jury found appellant guilty and he appealed.
After considering appellant’s contentions, this court, as already indicated, remanded the case to the district court to determine whether exigent circumstances, such as would cause a warrant to be unnecessary, were present. The district court found that exigent circumstances did exist. Appellant challenges that finding on this appeal.
II.
THE ARREST
In
United States v. Prescott,
A. Exigent Circumstances
In
United States v. Flickinger,
*734 We believe that assessment to be clearly erroneous. The crime committed by the appellant was serious but did not result in bodily injury to another. No weapon was used in its commission and the earlier discovery of a pellet gun in the car driven by the appellant provided only a weak inference that the suspect might be armed. It is true, of course, that the officer had a high degree of probable cause to arrest the appellant, but it is not clear that the officers had any substantial reason to believe that appellant would realize his apprehension was imminent and flee. As the facts indicate, the officers pursued their investigation in a measured and deliberate manner suggesting strongly that arrest was not thought to be required immediately upon the ripening of probable cause. There was no “hot pursuit.” The entry of the officers required force.
More important than these considerations, however, is the fact that under the circumstances of this case the acquisition of a warrant would not have presented any great difficulty nor would have entailed the loss of any substantial amount of time. Indeed, the FBI agent who made the arrest testified that he knew that a warrant could have been obtained by telephone but, without discussing the decision with anyone and perhaps on the good faith belief that a warrant was not necessary, decided to make the arrest without a warrant. The arrest, it should be remembered, was made at about three o’clock on a weekday afternoon and was preceded by approximately an hour of surveillance. Although the fact that adequate time to obtain a warrant exists will not in every case foreclose resort to exigent circumstances to justify a warrantless arrest in a residence, it is true that the availability of such time requires a stronger showing with respect to the Dorman criteria than otherwise is necessary.
The facts of Dorman give weight to our conclusion that the district court was clearly erroneous in its finding of exigent circumstances. In the first place, the police in Dorman attempted to get a warrant but found that the magistrate was unavailable, and at 9:00 p. m. on a Friday night it probably would have been quite time consuming to find a judge authorized to issue the warrant. Moreover, Dorman’s robbery of a clothing store involved the use of a gun and the firing of one shot during the course of the robbery. The possibility of flight by Dorman was strong because he had left at the scene of the robbery documents bearing his name and address. It was likely that Dorman would soon realize his blunder and flee from his home. Finally, Dorman was arrested only four hours after the robbery, a circumstance indicating no delay of the police’s “own making,” id. at 393-94, and the entry was made peacefully and after the officers announced their purpose.
We acknowledge that a district court’s finding of exigent circumstances should not be lightly rejected.
United States v. Flickinger, 573
F.2d at 1356-57. To do so we must be “left with the definite and firm conviction that a mistake has been committed.”
United States v. United States Gypsum Co.,
B. Does Prescott Apply To This Case?
Our holding with respect to exigent circumstances requires that we confront the issue whether
Prescott
or
Payton
applies to the facts of this case. Neither
Prescott
nor
Payton
explicitly state that its holding that a warrant is required is not retroactive. Nevertheless, there exists Supreme Court authority indicating that under certain circumstances even a decision interpreting a constitutional command need be applied only prospectively. Where the decision establishes a new principle of law “either by overruling clear past precedent or by deciding an issue of first impression whose resolution was not clearly foreshad
*735
owed,”
Chevron Oil Co. v. Huson,
The first of these criteria is the most critical. Thus, the Supreme Court has indicated that where the major purpose of a new constitutional doctrine is to enhance the truth-finding function of the trial, the doctrine should be applied retroactively regardless of its impact on the administration of justice.
Hankerson v. North Carolina,
That is frequently the case when the exclusionary rule is involved. The purpose of excluding evidence obtained in violation of the Fourth Amendment is to deter law enforcement officers from engaging in conduct which violates that Amendment’s guarantees. This purpose generally is not served by retroactively applying constitutional rules to conduct which has already occurred and which, at the time it occurred, was thought to be permissible.
Linkletter v. Walker,
It is indisputable . . . that in every case in which the Court has addressed the retroactivity problem in the context of the exclusionary rule, whereby concededly relevant evidence is excluded in order to enforce a constitutional guarantee that does not relate to the integrity of the factfinding process, the Court has concluded that any such new constitutional principle would be accorded only prospective application.
See also Williams v. United States,
We readily acknowledge that these authorities could provide a basis for prospective application only of
Prescott
or
Payton
were we convinced that neither result was “clearly foreshadowed.” At least with respect to
Prescott we
are compelled to acknowledge that its result was clearly foreshadowed. On two occasions prior to
Prescott
we indicated that a warrant very likely was required to legitimate an arrest within a residence based on probable cause in the absence of exigent circumstances.
See United States v. Calhoun,
Support for this proposition also flows from an effort to establish the “law” of the circuit with respect to the question this case presents that “existed” prior to
Prescott.
Establishing such law would be essential were we to hold that
Prescott
was to be applied prospectively only. Given the fundamental source from which
Prescott’s
holding is said to spring, the sanctity of the home in England immediately before the revolution,
We choose to do neither. Therefore, we hold that Prescott should be applied retroactively, or, alternatively, that the “law” prior to Prescott was as announced by Prescott. Because of our reliance solely upon the law of this circuit, it is unnecessary for us to decide or comment upon the possible retroactivity of Payton. It follows that the appellant’s motion to suppress was improperly denied and that his conviction must be reversed.
Reversed.
Notes
. Before
Prescott,
this court had been presented with a number of cases in which law enforcement officers had arrested persons in their homes without warrants. Until 1972, the court focused on whether the officers had probable cause to make an arrest and whether the officers entered the residence only after announcing their identity and purpose and being denied admittance.
Williams v. United States,
In
Pineda v. Craven,
