The officer may break open any outer or inner door or window of a house, or any part of a house, or anything therein, to execute a search warrant, if, after notice of his authority and purpose, he is refused admittance or when necessary to liberate himself or a person aiding him in the execution of the warrant.

Terms Used In 18 USC 3109

  • officer: includes any person authorized by law to perform the duties of the office. See 1 USC 1