We must decide whether law enforcement officers violated Lawrence D. Niel-son’s Fourth Amendment rights when they executed a search warrant that authorized them to enter his home without complying with the Fourth Amendment’s knock and announce requirement. Finding under the totality of the circumstances that officers were obligated to knock and announce pri- or to entering, the district court suppressed evidence seized during the search. Because we take the district court’s view that law enforcement officers failed to demonstrate that they had an objectively reasonable suspicion that knocking and announcing would be dangerous or futile, we AFFIRM.
I
Law enforcement officials received an anonymous Crime Stoppers report that a person named Danny Mills or Danny Niel-son possessed an automatic weapon kept in the loft in his garage and possessed narcotics in a work bench in the garage. Detective Erie Coffman, who is with the Junction City/Geary County Drug Task Force, determined that Nielson resided at an address matching that given by the tip. Coffman determined that Nielson had previously been' arrested in 1999 for possession of a firearm by a convicted felon and had pled no contest to misdemeanor possession of marijuana. Relying on the tip and the' circumstances of the 1999 search, he sought a search warrant authorizing police officers to search the residence without complying with the Fourth Amendment’s “knock and announce” requirement. Finding that probable cause existed to support the search warrant with á “no-knock” exemption, a Geary County district judge signed the warrant granting authority to the police to search the home of Nielson and Caroline Vigil.
In executing the warrant the following morning at 4:45 a.m., police found Nielson, unclad, and Vigil, clad in a bathrobe, in a bedroom. A loaded .45 caliber handgun was found on the floor next to their bed, knives were on the night stand, and seven other firearms were recovered from a closet safe,'including assault rifles. In the garage they found- 25-millimeter military rounds, and an M21 artillery simulator. Detectives- also seized small amounts of marijuana and smoking devices found in the garage workbench and bedroom. Both Nielson and Vigil were arrested.
In support of the application for a no-knock warrant, Detective Coffman provided an affidavit reciting three facts to establish probable cause for the- search and to support reasonable suspicion for an exemption to the knock and announce requirement. First, police conducted a search of Nielson’s home pursuant to a search warrant four years earlier. When executing the 1999 search, a loaded gun was found on top of a laundry basket outside a master bedroom, although both *1198 Nielson and Vigil were located between the kitchen and living room. That search uncovered five weapons and marijuana which resulted in Nielson being charged with possession of a firearm by a convicted felon and with misdemeanor possession of marijuana. Second, police received a Crime Stoppers anonymous report in August 2003 that Nielson possessed an automatic weapon and narcotics which were located in the garage. Third, detectives searched Nielson’s garbage which revealed marijuana seeds, and “five round cloth patches” which they believed to have been used to clean firearms. In his affidavit, Coffman therefore requested “a no-knock search warrant for officer’s safety based on Mr. Nielson’s past history of possessing firearms and the potential for violence.”
Before the district court, Nielson sought to suppress the evidence seized pursuant to the search, arguing that executing the search at 4:45 a.m. without knocking and announcing violated his constitutional rights. At the suppression hearing, Detective Coffman testified that officers were concerned that Nielson and Vigil might attempt to arm themselves if police knocked and announced. Officers determined that the garage where the Crime Stoppers tip said an automatic weapon and marijuana were located was connected to the house, but they did not know if there was an interior passageway between the garage and the house. Regarding the search more than four years prior, detectives testified that placing a gun on a laundry basket was unusual, and speculated that Nielson had handled the gun shortly before police entered, though Nielson did not resist and did not threaten violence. Moreover, police noted that small amounts of marijuana for personal use are easily destroyed by flushing. Police thus feared both violence and destruction of evidence.
After hearing this testimony, the district court concluded that it was clear that the officers were obligated to knock and announce before entering Nielson’s home. The district court found that the facts presented to support reasonable suspicion fell far short of providing reasons to believe Nielson would be violent or attempt to destroy evidence when he had exhibited no prior violent behavior and when he had not attempted to destroy evidence during the 1999 search. Finding that Tenth Circuit precedent clearly established that Detective Coffman’s information was insufficient to support a no-knock execution to the search warrant, the district court refused to apply the good faith doctrine under
United States v. Leon,
II
On appeal from a motion to suppress, we accept the district court’s factual findings unless they- are clearly erroneous'.
United States v. Moore,
We must begin any examination of Fourth Amendment limitations on no-knock entries with two Supreme Court cases. The first,
Wilson v. Arkansas,
In the second case,
Richards v. Wisconsin,
When reviewing a district court’s suppression ruling, we must “determine whether the facts and circumstances of the particular entry justified dispensing with the knock and announce requirement.”
Richards,
[TJhere was a prior history of searching defendant’s residence without violence or the destruction of evidence. When defendant’s residence was searched in 1999, the officers knocked and announced before entering the house. Defendant and Caroline Vigil were awake when the search was conducted. Although they did not answer the door, there is no claim that they attempted to destroy evidence or that they threatened the safety of the officers. In addition, there is no evidence or indication that defendant or his girlfriend had acted violently or threatened violence toward officers or others since 1999. The only evidence referred to in the affidavit to support a no-knock entry for the safety of the officers is the anonymous tip that defendant had automatic weapons in the loft of his garage approximately seven weeks before the search was conducted.
Slip op. at 8. Based on these findings, the district court concluded that this case was not close because no facts were alleged in the affidavit or existed in the totality of the circumstances to justify a no-knock entry. We cannot conclude that these factual findings are clearly erroneous.
Whether these facts are sufficient to support a determination with regard to dangerous or exigent circumstances is a legal question we review de novo.
Dahlman,
*1201
For example, in
United States v. Colonna,
None of the elements that have supported dispensing with the knock and announce requirement in our case law exist in the current factual circumstances. Our inquiry remains flexible, but because the Supreme Court “left to the lower courts the task of determining the circumstances under which an unannounced entry is reasonable under the Fourth Amendment,”
Ramirez,
We find particularly notable in the present case the fact that law enforcement officers make no claim that Nielson was distributing narcotics or that he had engaged in any prior violent conduct. Detective Coffman explicitly testified to the fact that he had no information when executing the search warrant that either Vigil or Nielson had engaged in past acts of violence. Moreover, the prior search of Nielson’s home resulted in no violence, and despite his silent refusal to answer the door, he apparently cooperated after the police entered. Although the police had evidence that a firearm was present, that fact by itself does not demonstrate an increased risk beyond that normally faced by law enforcement officers, especially where, as here, their information was that a firearm was in a loft in the garage, and they had no information leading them to believe that Nielson had interior access to the garage. Further reasons to believe that knocking and announcing police presence would be dangerous or futile, such as counter-surveillance activities, are also absent in this case.
See United States v. Cline,
Law enforcement officers may have perceived certain additional risks caused by the likelihood that Nielson possessed guns, at least in the garage, to which he
*1202
may have, had access. However, perception of an increased risk does not by itself establish the objective, reasonable suspicion that exigent circumstances exist. In response to the court’s own questions, Detective Coffman testified that the belief that firearms are present is sufficient to justify a no-knock search.
1
Our precedent has made clear that the “mere statement that firearms are present, standing alone, is insufficient,”
Moore,
Although the potential presence of loaded weapons may heighten the risk to law enforcement officers, where no other evidence of potential violence or danger exists, we have made clear that such circumstances do not support reasonable suspicion that exigent circumstances justify dispensing with the requirement that police knock and announce their presence when executing a search warrant. 2 The district court properly concluded that the police failed to demonstrate reasonable suspicion that in this particular circumstance knocking and announcing their presence would be dangerous or futile or would lead to the destruction of evidence.
Ill
Nielson’s Fourth Amendment rights were violated when the police failed to comply with their constitutional duty to knock and announce their presence. Nonetheless, the government argues that the officers’ actions were conducted in good faith. Because the remedy courts have fashioned for Fourth Amendment violations is harsh, requiring the exclusion of potentially reliable evidence of wrongdoing, we conduct a separate inquiry as to whether the exclusionary sanction is appropriate. Designed to provide a deterrent to police misconduct, the exclusionary rule is not mandated by the Fourth Amendment.
See Leon,
Although the analysis in
Leon
specifically addressed whether the exclusionary sanction should be applied to warrants
*1203
lacking probable cause to justify a search, the government argues that good faith excuses its failure to comply with the Fourth Amendment knock and announce requirement.
See, e.g., United States v. Tisdale,
In determining whether to suppress evidence “our good-faith inquiry is confined to the objectively ascertainable question whether a reasonably well trained officer would have known that the search was illegal despite the magistrate’s authorization.”
Leon,
In response to questions from the court below, Detective Coffman represented that the mere belief that firearms are present is sufficient to justify a warrant from a state judge excusing compliance with the Fourth Amendment’s knock and announce requirement.
3
Although “[t]he practice of allowing magistrates to issue no-knock warrants seems entirely reasonable when sufficient cause to do so can be demonstrated ahead of time,”
Richards,
Officers must demonstrate that they have an objectively reasonable concern that exigent circumstances exist.
See Stewart,
IV
Because we agree with the district court that the circumstances presented in this case did not excuse law enforcement officers from complying with the Fourth Amendment’s knock and announce requirement, we AFFIRM.
Notes
. We find this statement troubling in light of our prior observations that "[o]ur concern is heightened because this court 'seems to be reviewing the actions of Kansas police executing ‘knock and announce’ warrants with some frequency.’ ”
United States
v.
Jenkins,
. "[I]f the knock and announce requirement is to remain the rule rather than the exception, we must still be able to tell the difference between the ordinary risks to officer safety in serving search warrants and the risks to officer safety in instances in which a no-knock entry is justified.’’
Musa,
. It does not appear that Kansas provides statutory approval for no-knock warrants.
See Estate of Fuentes v. Thomas,
. We find instructive the Eighth Circuit’s reasoning that the “good-faith exception is perfectly suited for cases ... when the judge’s decision was borderline.”
United States v. Scroggins,
