Facts
- Baltimore police investigated suspected drug activity involving Lawrence McWebb at 2036 Park Avenue.
- Officers obtained a warrant authorizing a search of “the person of Lawrence McWebb and the premises known as 2036 Park Avenue third floor apartment” for controlled substances and related items.
- Before seeking the warrant, officers consulted sources including building records and the landlord and reasonably believed the third floor contained only one apartment.
- The third floor in fact contained two separate apartments: one occupied by McWebb and one by Harold Garrison.
- While executing the warrant, officers entered and began searching Garrison’s apartment, mistakenly believing it was the only third-floor unit.
- Before officers realized the third floor contained two distinct units, they found drugs and paraphernalia in Garrison’s apartment and seized them.
- After discovering the mistake, officers stopped searching Garrison’s unit.
- Garrison was convicted under Maryland’s controlled substances law based on the seized evidence; the trial court denied suppression, the intermediate appellate court affirmed, and the state’s highest court reversed, treating the search of Garrison’s apartment as beyond the warrant.
Issues
- Whether the Fourth Amendment requires suppression when a warrant describes a “third floor apartment,” but officers reasonably and mistakenly believe there is only one unit and initially search the wrong apartment.
- Whether the warrant’s validity and the reasonableness of its execution are assessed based on information known (or reasonably discoverable) at the time the warrant was obtained and executed.
- Whether officers must cease searching once they learn the premises contain multiple units not all covered by the warrant’s intended scope.
Decision
- The Supreme Court reversed the state high court and held the Fourth Amendment did not require suppression of the evidence seized from Garrison’s apartment.
- The warrant was evaluated based on the information officers disclosed, or had a duty to discover and disclose, to the magistrate when the warrant issued.
- The officers’ failure to recognize the warrant’s overbreadth at the outset was “objectively understandable and reasonable.”
- The initial search of Garrison’s apartment was reasonable given the objective facts available at entry; the subsequent termination of the search upon learning of the two units supported reasonableness in execution.
- Dissent: Justice Blackmun (joined by Justices Brennan and Marshall) would have suppressed the evidence, viewing the search as effectively warrantless once the separate unit became apparent and questioning the adequacy of the police investigation.
Legal Principles
- Warrant validity is judged at the time of issuance, in light of what officers knew or reasonably should have known and had a duty to disclose to the issuing magistrate.
- Later-discovered facts showing a warrant description is overbroad do not automatically or retroactively invalidate the warrant.
- The Fourth Amendment permits searches based on reasonable, objective mistakes about the premises described, so long as officers make a reasonable effort to ascertain and identify the place intended to be searched.
- Reasonableness in execution requires officers to limit or end a search when they become aware they are in a place not properly within the warrant’s scope.
Conclusion
The Court held that officers who reasonably believed the third floor was a single apartment could rely on a warrant describing the “third floor apartment,” and that evidence seized before the officers learned of the warrant’s overbreadth need not be suppressed because the mistake and initial execution were objectively reasonable.