A search of property by the police without knocking and announcing their presence and purpose before entry. • A no-knock search warrant may be issued under limited circumstances, as when a prior announcement would probably lead to the destruction of the objects searched for, or would endanger the safety of the police or another person. […]
knock-and-announce rule. Criminal procedure. The requirement that the police knock at the door and announce their identity, authority, and purpose before entering a residence to execute an arrest or search warrant. — Also termed knock-and-notice rule. Cf. no-knock search warrant under SEARCH WARRANT; no-knock search under SEARCH. [Cases: Searches and Seizures 54, 143. 1. C.J.S.
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