Opinion
Wе granted review to decide whether the so-called “good faith” exception to the exclusionary rule announced in
United States
v.
Leon
*617
(1984)
In
Leon, supra,
I
A
On the afternoon of October 22,1990, Deputy Frank Battles and Sergeant Dale Morrison of the Contra Costa County Sheriffs Office were directed to investigate a reported shooting in the 5600 block of San Pablo Dam Road in El Sobrante. The officers drove separately to that location, where they found a man with a gunshot wound sitting on the sidewalk at 5591 San Pablo Dam Road. Witnesses at the scene told the officers that the driver of a white Cadillac parked in a common driveway shared by several houses in the 5600 block had argued with the victim around the time of the shooting and had then driven off. The officers found a trail of blood leading from the wounded man to the common driveway.
As part of his investigation of the shooting, Battles began canvassing the houses sharing the driveway. Defendant answered the door to the house at number 5611; Battles identified himself and his purpose. Defendant said that he had been sleeping and had heard nothing; he did not recognize the name of the shooting victim. Battles returned to the shooting victim where he was joined by Sergeant Morrison.
*618 Shortly afterward, defendant approached the officers, who were still at the scene of the shooting. Battles mentioned that two .32-caliber shell casings had been found at the site and asked defendant if he had any weapons. Defendant replied that he owned two guns and that neither was a .32-caliber. The officеrs asked to see the guns; defendant replied that he would get them from his house. As Deputy Battles later related in his testimony at the preliminary hearing, because the officers were investigating a shooting, Sergeant Morrison told defendant “to hang on a second and explained to him that since we were dealing with a shooting, we really didn’t trust him to go inside and bring the gun back out by himself. And that we wished to accompany him into the residence while he picked up the gun for our own safety.”
According to Battles, defendant responded, “I guess,” and entered the house, followed by the two officers. Inside, defendant retrieved a .45-caliber Colt handgun and a shotgun from the bedroom and handed the weapons to the officers. While standing in defendant’s bedroom, Battles saw on the bedside table a small plastic bag containing what appeared to be marijuana. Battles asked defendаnt for permission to look through the rest of the house to ensure that no one else was present. Defendant agreed. Morrison entered an adjacent room and saw within a substantial quantity of marijuana in plain view. The officers then arrested defendant and secured the house by posting a uniformed officer inside.
That evening, Detective Robert Hansen of the Contra Costa County Sheriffs Office applied to a magistrate for a warrant to search defendant’s house for marijuana and other evidence of drugs. His affidavit in support of the warrant application summarized the facts of the shooting investigation and the discovery of the marijuana in defendant’s house as related to him by Battles and Morrison over the telephone. Because it is a key element in the government’s claim that the “good faith” 1 exception to the exclusionary rule applies here to validate Detective Hansen’s subsequent warranted search of defendant’s residence and the seizure of evidence therein, we summarize the contents of his five-page, handwritten affidavit.
As recited on the first page of Hansen’s affidavit, Sergeant “Morrison said he was invited into [defendant’s] residence along with Battles as [defendant] *619 agreed to retrieve his two guns.” (Italics added.) After describing seeing the baggie of marijuana in plain view in defendant’s bedroom and a greater quantity in the study, Hansen’s affidavit provided a more detailed account of the circumstances leading up to the entry into the house, including the following: “In the course of questioning [defendant,] Battles asked ‘Do you have any weapons. When [defendant] replied ‘Yes, two,’ Battles asked, ‘May we see them.’ [Defendant] replied, ‘I’ll get them.’ Battles then said to [defendant] that he and Morrisоn would have to go with him. Battles said he and Morrison followed [defendant] into the house without any protest from [defendant].” (Italics added.) Hanson’s affidavit closed with an account of the postarrést procedures the officers followed and of Battles’s police training and experience.
A magistrate issued the requested search warrant that evening and Hanson executed it that night. His search of defendant’s residence turned up additional quantities of marijuana and other evidence of drug possession, on the strength of which defendant was charged with possession of marijuana for sale (Health & Saf. Code, § 11359) and possession of cocaine while armed with a firearm (Health & Saf. Code, § 11350; Pen. Code, § 12022, subd. (a)).
B
At the preliminary hearing, defendant moved to suppress the evidence seized under the search warrant on the ground that the initial entry by Deputy Battles and Sergeant Morrison was made without his consent and that the evidence seized in the subsequent warranted search was tainted because it was the product of the original unconsented entry. As relevant here, in support of his suppression motion, defendant claimed that as he walked back to his house to retrieve his two guns, “the deputies followed me. They were standing behind me on the porch when I opened the door. As soon as I walked in they followed me in and said something to the effect of, ‘We can’t let you go in there alone, there might be another body or another person in here.’ ... I did not invite the deputies into my home. Neither deputy asked if they could come in my home. I never gave the deputies permission to enter my home.”
After hearing testimony and argument on the suppression motion, the municipal court judge found that “there has been a discrepancy in testimony as . . .to what exactly took рlace. . . . [T]he defendant [went] . . . up to the officers and the officers apparently asked him if he had any weapons. . . . And that’s when we get back to the house. We have some conflict as to what exactly took place. In the best scenario from [the prosecution’s] standpoint, ... it was that he opened the door with the officers right there *620 and walked in. And they walked in after him with the understanding apparently there was implied consent. I’m going in. We’re all going in. It’s understood we’re all going in. That of course is contradicted by ... the declaration of the defendant which was not controverted, or he says it somewhat differently. So, what I’m left with is whether or not that conduct, if believed, is sufficient to warrant implied consent. ... So, the court finds that the consent wasn’t any good.”
The magistrate then turned to the prosecution’s claim that the exception announced in
Leon, supra,
II
A
The Court of Appeal reversed, with directions to grant defendant’s motion tо suppress. It reasoned that the affidavit of Detective Hansen submitted to the magistrate in support of the warrant application was internally contradictory and that Hansen, an officer with over 10 years’ experience at the time he applied for the warrant, should have kñown it to be so. The statement in Hansen’s affidavit, attributed to Sergeant Morrison, that defendant “invited” the officers into his house, the Court of Appeal wrote, “is a conclusionary statement unsupported by observable fact, contained in an affidavit prepared by an officer who was not present, and contradicted by a statement attributed to the other officer present [i.e., Battles’s statement that the officers would have to go with him], . . . Hansen . . . would be expected to know that absent exigent circumstances officers may not enter a residence without a wаrrant unless they have the resident’s consent, and that the consent must be free, voluntary and unequivocal, and not a mere acquiescence to a claim of legal authority.” The Court of Appeal concluded that Hansen’s failure to “clarify” for the magistrate the ambiguity inherent in the affidavit “precludes the police from entertaining a good faith belief that the warrant was properly issued.” (Italics added.)
*621
Underlying its conclusion that
Leon, supra,
B
The Court of Appeal relied on our opinion in
People
v.
Camarella
(1991)
Thus, in granting review of the Court of Appeal’s decision, the question before us in
Camarella, supra,
The distinction is an important one in the evolution of Fourth Amendment jurisprudence. For although the good faith exception formulated by the high court in
Leon, supra,
In
Leon, supra,
The high court granted the government’s petition for certiorari and reversed. “[T]he Fourth Amendment exclusionary rule should be modified,” it held, “so as not to bar the use in the prosecution’s case in chief of evidence obtained by officers acting in reasonable reliance on a search warrant issued by a detached and neutral magistrate but ultimately found to be unsupported
*623
by probable cause.”
(Leon, supra,
The so-called “good faith” exception of
Leon, supra,
Ill
A
Although we have not previously confronted the issue, in the 10 years since
Leon, supra,
In
People
v.
Leichty
(1988)
The Court of Appeal ordered the evidence seized in the search of defendant’s home suppressed. The good faith exception to the exclusionary rule recognized in
Leon, supra,
In
People
v.
Brown
(1989)
In
People
v.
Ivey
(1991)
In
People
v.
Ingham
(1992)
B
In their emphasis on the core rationale of
Leon, supra,
After concluding that the scope of the vehicle search exceeded that authorized by
Chimel
v.
California
(1969)
The court then considered the government’s argument that because a magistrate had reviewed the officer’s actions in conducting a warrantless inventory search of the automobile before issuing a warrant, the prior illegal search of the automobile had been “sanitized”: “A magistrate’s role when presented with evidence to support a search warrant is to weigh the evidence to determine whether it gives rise to probable cause. A magistrate evaluating a warrant application based in part on evidence seized in a warrantless search is simply not in a position to evaluate the legality of that search. Typically, warrant applications are requested and authorized under severe time constraints. Moreover, warrant applications are considered without the benefit of an adversarial hearing in which the evidentiary basis of the application might be challenged. Although we encourage magistrates to make all possible attempts to ensure that a warrantless search was legal before relying on the fruits of that search, we are mindful of the limitations on a magistrate’s fact-finding ability in this context. We therefore conclude that a magistrate’s consideration does not protect from exclusion evidence seized during a search under a warrant if that warrant was based on evidence seized in an unconstitutional search.” (Vasey, supra, 834 F.2d at pp. 789-790, italics added and fn. omitted.)
Several federal appellate courts have adopted reasoning similar to
Vasey, supra,
In addition to the Ninth Circuit, the First, Sixth and Tenth Circuits have also concluded that the exception to the exclusionary rule announced in
Leon, supra,
In declining to validate warrantless searches on the basis of the post hoc issuance of a warrant, these Court of Appeal and federal circuit decisions
*628
uniformly rely on the explicit rationale supporting the high court’s ruling in
Leon, supra,
That rationale is absent, however, where the initial Fourth Amendment violation is the product of police rather than magisterial conduct. As the Ninth Circuit pointed out in
Vasey, supra,
IV
Despite this substantial precedent supporting the view that the good faith exception of
Leon, supra,
Although the Second Circuit found that the canine sniff of the outside of defendant’s house was a “search” that in the absence of a warrаnt violated the Fourth Amendment, and that the additional information supporting the
*629
warrant application did not establish probable cause, it upheld the admissibility of the evidence seized in the search under the authority of
Leon, supra,
In arguing that the
Leon
exception should apply to sustain the admissibility of the evidence seized in defendant’s residence by Detective Hansen, the Attorney General does not contend that the “good faith” of Deputy Battles and Sergeant Morrison alone is sufficient to validate a warrantless entry. Instead, the government makes the more focused claim that the
subsequent
search by Detective Hansen under a search warrant issued by a magistrate triggers the good faith exception of
Leon, supra,
*630 The Attorney General argues that, contrary to the view taken by the Court of Appeal, Detective Hansen’s affidavit was not objectively unreasonable. Instead, it presented a balanced account of the entry as related to him by Battles and Morrison, including the statement of the former that the officers would “have to go with” defendant. Because his affidavit in support of the warrant application fairly laid out for the magistrate the factual circumstances underlying the entry into defendant’s house and observation of contraband in plain view, Hansen was entitled to rely on what was, in effect, an implicit adjudication by the warrant magistrate that the entry was consensual and thus passed constitutional muster.
We are not persuaded. Even assuming that the reasoning of the Second Circuit in
United States
v.
Thomas, supra,
Moreover, it is virtually a truism in Fourth Amendment search cases that contested issues of consent typically present highly factual questions. (See, e.g., 3 LaFave, Search and Seizure (2d ed. 1987) §§ 8.1-8.2, pp. 146-235.) This characteristic suggests that such matters, typically involving evidentiary uncertainties, are not easily susceptible to reliable ex parte, nonadversarial resolution by a warrant magistrate. This seems especially so given the likelihood that magistrates, in the absence of a contrary showing, probably review the sufficiency of a warrant affidavit in a context in which the needs of law enforcement for expedition and the magistrate’s own nonwarrant docket may exert pressure to move with more speed than deliberation.
In saying this, we do not fault the magistrate. Rather, we are mindful of the comment of this court in
People
v.
Cook
(1978)
Although the Attorney General acknowledges the force of our language in
Cook, supra,
It may be true that, as the government contends, magistrates have a duty even after
People
v.
Cook, supra,
In short, given the character of Detective Hansen’s affidavit, the fact-bound nature of the disputed consent issue, and the likelihood that warrant magistrates understand their essential role to be limited to a finding of probable cause rather than a more searching inquiry involving the constitutionality of the conduct underlying the seizure, we conclude that the “Leon-type” reasoning of United States v.
Thomas, supra,
*632 V
Our conclusion that the good faith exception of
Leon, supra,
The Court of Appeal expressly concluded that it was “not objectively reasonable” for the police officers to believe that were “invited” into defendant’s residence or had his consent to enter, when they told him they wanted to see his guns and “would have to go with him” in order to retrieve them. Although it did not exрressly refer to recent high court cases discussing the “reasonable mistake of fact” doctrine relied on by the Attorney General (see, e.g.,
Illinois
v.
Rodiguez
(1990)
Conclusion
The judgment of the Court of Appeal is affirmed.
Lucas, C. J., Mosk, J„ Kennard, J., Baxter, J., George, J„ and Turner, J., * concurred.
Notes
We reluctantly use the term “good faith” to describe the exception formulated by the high court in
Leon, supra,
Nonexclusion is not always appropriate, however, even where “an officer has obtained a warrant and abided by its terms. . . . [The] officer’s reliance on the magistrate’s probable-cause determination and on the technical sufficiency of the warrant he issues must be objectively reasonable [citation], and it is clear that in some circumstances the officer will hаve no reasonable grounds for believing that the warrant was properly issued.”
(Leon, supra,
468 U.S. at pp. 922-923 [
“By virtue of California Constitution, article I, section 28, subdivision (d), the issue [i.e., the reach of the exclusionary rule] is purely one of federal constitutional law. (See
In re Lance W.
(1985)
We note that in several of these federal circuit decisions, the рolice officers never obtained a search warrant
at all,
these cases thus differ in that important respect from the facts in
Vasey, supra,
In an earlier case, the District of Columbia Circuit employed similar reasoning to uphold a warranted house search based on evidence retrieved from a warrantless seizure of a suspect’s garbage. On the basis of gambling chits found inside a plastic garbage bag and other information, a magistrate issued a warrant to search the suspect’s house, where narcotics were found. “It was eminently reasonable,” the appellate court wrote, “for the [judge who issued the warrant], and the police officers, to believe that the trash bag search was constitutional and its fruits could be used to establish probable cause, given that the overwhelming weight of authority rejects the proposition that a reasonable expectation of privacy exists with respect to trash discarded outside the home and the curtilage thereof.”
(United States
v.
Thornton
(D.C. Cir. 1984)
The high court has more than once noted this circumstantial effect on a magistrate’s probable cause determinations: “It is true that in an ideal system an unreasonable request for a warrant would be harmless, because no judge would approve it. But ours is not an ideal
*632
system, and it is possible that a magistrate, working under docket pressures, will fail to perform as a magistrate should. We find it reasonable to require the officer applying for the warrant to minimize this danger by exercising reasonable professional judgment.”
(Malley
v.
Briggs
(1966)
It is, moreover, questionable whether the government has preserved the issue for review. It was not until this case was before the Court of Appeal that the Attorney General contended that the officers’ initial search was lawful under the
Rodriguez-Jimeno
principle. Defendant timely objected to this late assertion of an alternative theory. (See
People
v.
Smith
(1983)
Presiding Justice, Court of Appeal, Second District, Division Five, assigned by the Acting Chairperson of the Judicial Council.
