This case presents another aspect of the search-and-seizure issue presented in
State v. Colvin,
123
N.J.
428,
In this case the police lacked generalized probable cause to believe that a stopped car contained drugs but asserted that they had probable cause to believe that a specific container inside the car contained drugs. The police seized and opened the container without a warrant.
This scenario poses the problem highlighted in a case recently decided by the United States Supreme Court.
See California v. Acevedo,
—
U.S.
-, 111
S.Ct.
1982, 114
L.Ed.2d
619 (1991). Prior to
Acevedo,
probable cause to believe that a closed container in a vehicle contains contraband or evidence was not enough to permit a search of that container; a warrant was required.
Arkansas v. Sanders,
442
U.S.
753, 99
S.Ct.
2586,
We need not debate the ruling of the Supreme Court for we are satisfied, as was the court below, that in the circumstances of this case, the police lacked probable cause to believe that either the car or the container held drugs.
I
On March 1, 1987, a police officer on routine patrol in the Town of Belvidere observed a red van with a defective license-plate light being driven by defendant. The officer stopped the van and approached on the driver’s side. While standing outside the van, the officer noticed a black opaque 35-millimeter film container lying on the storage area on the van’s front console. Such containers are cylindrical in shape and about two inches in length. The officer did not see a camera in the van. He asked defendant to hand him the container. As defendant handed over the container, he stated that he used it to hold bridge tokens. The officer removed the film container’s lid and detected an odor of marijuana and some residue inside the canister. The officer asked defendant to step out of the van and then conducted a further search of the vehicle, discovering another film container. He found narcotics inside that container.
Defendant was charged with criminal possession of the narcotics, contrary to N.J.S.A. 24:21-20a(1), repealed by A.1 1987, c. 106. See N.J.S.A. 20:35-23 (continuing in effect prior law for violations committed before effective date of new chapter of Criminal Code). He moved to suppress the evidence before trial. Defendant argued that the search of the first film container was invalid because it was not based on probable cause. Therefore the narcotics discovered in the second film container would have to be suppressed. At the suppression *379 hearing, the arresting officer testified that in his seven years of experience as a police officer he had investigated at least forty narcotics incidents with “at least half of them” involving the use of 35-millimeter film containers to hold drugs. He admitted that he asked defendant to hand him the film container for no reason other than that his past experience showed that a high percentage of such film containers, when found without cameras, contained narcotics. The stop did not occur in a high-crime area nor did the police have any tips regarding suspected drug activity by defendant. Regarding defendant’s claim of using the container to hold bridge tokens, the officer said that in his previous experience he had encountered three vehicles whose occupants used such containers for that purpose. The officer testified that he did not ask defendant whether he had a camera before he requested the film container. He also said that he could not detect an odor of marijuana until after he had opened the film container. The trial court denied the motion to suppress. It ruled that the officer had probable cause based on the lack of a camera near the canister; the experience of the officer in his prior stops; and the officer’s training in drug paraphernalia courses. At trial, defendant was convicted of criminal possession of narcotics. He appealed the denial of his motion to suppress.
The Appellate Division reversed the trial court, holding that the police officer did not have probable cause to search the film container. 231
N.J. Super,
114, 555
A.
2d 30 (1989). The court stated that the officer’s “asserted ‘belief’ is mere conjecture or suspicion and at best a ‘hunch.’ ”
Id.
at 119,
The State appeals to this Court as of right. R. 2:2-1(a)(2).
II
The basic premise in any warrantless search-and-seizure case is that such a seizure is per se illegal unless it falls
*380
within one of a very few specific and well-delineated exceptions.
Katz v. United States,
389
U.S.
347, 88
S.Ct
507, 19
L.Ed.2d
576 (1967). The State argues that two of those exceptions apply here. First, the State argues that the search was within the scope of the “automobile exception” to the warrant requirement established by the Supreme Court in
Carroll v. United States,
267
U.S.
132, 45
S.Ct.
280, 69
L.Ed.
543 (1925). That exception recognizes that automobiles and other vehicles may be searched without a warrant in circumstances that might not justify the warrantless search of a house or an office, provided that there is probable cause to believe that the vehicle contains contraband or other evidence of criminal activity.
Carroll v. United States, supra,
267
U.S.
at 156, 45
S.Ct.
at 286, 69
L.Ed.
at 552. Second, the State argues that the search may be justified under the “plain view doctrine.”
Texas v. Brown,
460
U.S.
730, 103
S.Ct.
1535, 75
L.Ed.2d
502 (1983);
Coolidge v. New Hampshire,
403
U.S.
443, 91
S.Ct.
2022, 29
L.Ed.2d
564 (1971). The Court clarified the elements of that doctrine in
Texas v. Brown
and
Arizona v. Hicks,
480
U.S.
321, 107
S.Ct.
1149, 94
L.Ed.2d
347 (1987), to require that the police have probable cause to associate the observed item with criminal activity in order to seize it without a warrant. This Court adopted that requirement of the plain-view doctrine in
State v. Bruzzese,
94
N.J.
210,
Whether viewed under the automobile exception or plain-view doctrine, therefore, the ultimate question in this case is the same: whether the police officer had probable cause to believe that the film canister contained narcotics when he viewed it in the front console of the van.
III
Probable cause requires “a practical, common-sense decision whether, given all the circumstances * * * there is a
*381
fair probability that contraband or evidence of a crime will be found in a particular place.”
Illinois v. Gates,
462
U.S.
213, 238, 103
S.Ct.
2317, 2332, 76
L.Ed.2d
527, 548 (1983);
State v. Novembrino,
105
N.J.
95, 117-18,
Some objects or containers, although by themselves not sufficiently probative of criminal activity, may by their configuration or design proclaim their contents to an observer. In
Arkansas v. Sanders, supra,
442
U.S.
at 764 n. 13, 99
S.Ct.
at 2593 n. 13, 61
L.Ed.2d
at 245 n. 13, the Supreme Court stated that “some containers (for example a kit of burglar tools or a gun case) by their very nature cannot support any reasonable expectation of privacy because their contents can be inferred from their outward appearance.” Consistent with that observation, courts have upheld the warrantless opening of containers bearing labels identifying their contents,
United States v. Eschweiler,
A more difficult case is presented by warrantless seizures or searches of intrinsically innocent objects or containers when probable cause is based on the police officer’s experience and training in associating such objects with criminal activity. We recognize that in some situations a police officer may have particular training or experience that would enable him to infer criminal activity in circumstances where an ordinary observer would not. E.g., United States v. Green, 670 F.2d 1148 (D.C.Cir.1981) (sequence of events between three persons on street corner, furtive movements of cupped hands, and flight, sufficient to support finding of probable cause by experienced narcotics investigator). In such situations, when an officer’s experience and expertise is relevant to the probable cause determination, the officer must be able to explain sufficiently the basis of that opinion, so that it “can be understood by the average reasonably prudent person.” W. LaFave, Search and Seizure, § 3.2(c) (1987).
*383
For example, the police officer in
Texas v. Brown, supra,
460
U.S.
730, 103
S.Ct.
1535,
In this case, the police discovered an object that appears intrinsically innocent. The object seized and searched was an opaque film canister, unaccompanied by a camera or other film accessory. Neither the configuration nor the design of such a container “proclaims its contents.” Nor were the contents of the canister visible to the officer. If a finding of probable cause that its contents were criminal is to be sustained, then, it must be shown here that the officer’s conclusion, when viewed in light of his special training or experience, would persuade the average reasonably prudent person that such a finding was justified.
We agree with the Appellate Division that the explanation for his opinion offered by the officer does not meet that standard. A mere assertion of the officer’s belief is insufficient.
See Donaldson v. State,
46
Md.App.
521,
In contrast, the officer in
Texas v. Brown
detailed his experience with similar narcotics containers and explained how the surrounding circumstances, including his observation of plastic vials, loose white powder, and other party balloons, led him to form a belief based on probable cause that the balloon contained drugs. 460
U.S.
at 734, 103
S.Ct.
at 1539,
Obviously, as noted by the Appellate Division, were there other indicia of criminality, the probability would have been greater.
See United States v. White,
We recognize the difficulty faced by law-enforcement officers in making decisions such as the one here. Moreover, we do not mean to discourage investigation by police on suspicion of criminal activity. Had there been proof here, as in Texas v. Brown, supra, of regularized police experience that objects *386 such as the film canister are the probable containers of drugs, we would have a different case. But here the evidence was the experience of only one officer and even that evidence supplied no information about what percentage of observed containers held drugs.
To summarize, searches undertaken without a warrant must be justified under one of the recognized exceptions to the warrant requirement and a finding of probable cause in the sense of “a fair probability” must be shown to be warranted by the objective factors that would permit a comparably well-trained police officer to reach such a conclusion. That showing has not been made here.
The judgment of the Appellate Division is affirmed.
For affirmance — Chief Justice WILENTZ, and Justices CLIFFORD, HANDLER, POLLOCK, O’HERN, GARIBALDI and STEIN — 7.
For reversal — None.
