Also known as: detached neutral magistrate requirement · neutral and detached magistrate requirement · neutral detached magistrate requirement · neutral magistrate · detached magistrate
Written by attorneys · grounded in primary & secondary sources — see below
A Fourth Amendment requirement that a search or arrest warrant issue only from a judicial officer independent of law enforcement and capable of rendering an impartial probable cause determination.
Officers obtained a warrant from a magistrate judge who reviewed the affidavit without participating in the investigation. They executed the warrant and seized evidence even though a later court found the affidavit insufficient. The evidence is admissible because the officers reasonably relied on the issuance by the neutral magistrate.
A housing inspector applied to a magistrate for a warrant to inspect an apartment building for code violations. The magistrate reviewed the application and issued the warrant without any involvement in the inspection program. The warrant satisfies the requirement because the magistrate acted as an independent judicial officer.
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Agents obtained an arrest warrant from a magistrate after presenting an affidavit showing probable cause. They arrested the suspect at his home and recovered incriminating statements. The arrest is valid because the magistrate who issued the warrant was detached from the investigation.
Officers developed probable cause to arrest a suspect but entered his residence without first obtaining a warrant from any judicial officer. They seized evidence inside the home. The entry violates the requirement because no neutral magistrate authorized the intrusion into the home.
A state trooper stopped a driver for speeding and saw a weapon in the car. The trooper searched the passenger compartment without obtaining a warrant from a magistrate. The search is invalid under the requirement because the officer performed the search without prior judicial authorization by a neutral magistrate.
A state attorney general who had directed the investigation personally signed a warrant authorizing the search of a suspect's home. Officers executed the warrant and seized documents. The warrant is invalid because the attorney general was not a detached and neutral magistrate.
A court clerk may qualify if sufficiently independent from law enforcement and able to determine probable cause. An attorney general actively involved in an investigation does not qualify.
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Yes. Even for domestic national security threats, electronic surveillance must be approved in advance by a neutral and detached magistrate rather than authorized unilaterally by the executive.
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The document is not a valid warrant. A clerk's forgery of a judge's name cannot substitute for the required judicial act of determining probable cause and signing the warrant.
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Yes. A magistrate may review complaints and issue warrants based on information transmitted by telephone or other reliable electronic means.
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…the police can invade the home to enforce it, provided, of course, that they obtain a determination of probable cause from a neutral magistrate. One of the reasons for the Court's holding in Griswold v. Connecticut , 381 U. S. 479 (1965), was precisely the possibility, and repugnance, of permitting searches to obtain evidence…