[Rev. 2012] National Police Service CAP. 84 57. Power to enter premises and stop vehicles, etc., without warrant — (1) Subject to the Constitution, if a police officer has reasonable cause to believe (a) (b) that anything necessary to the investigation of an alleged offence is in any premises and that the delay caused by obtaining a warrant to enter and search those premises would be likely to imperil the success of the investigation; or that any person in respect of whom a warrant of arrest is in force, or who is reasonably suspected of having committed a cognizable offence, is in any premises, the police officer may demand that the person residing in or in charge of such premises allow him free entry thereto and afford him all reasonable facilities for a search of the premises, and if, after notification of his authority and purpose, entry cannot without unreasonable delay be so obtained, the officer may enter such premises without warrant and conduct the search, and may, if necessary in order to effect entry, break open any outer or inner door or window or other part of such premises. (2) A police officer may stop, search and detain any vehicle or vessel which the police officer has reasonable cause to suspect is being used in the commission of, or to facilitate the commission of, an offence. (3) A person who fails to obey a reasonable signal given by a police officer in uniform requiring the person to stop any vehicle or vessel commits an offence and is liable on conviction to imprisonment for a term not exceeding twelve months or to a fine not exceeding one hundred thousand shillings, or to both. (4) A police officer may arrest a person under subsection (3) without a warrant unless the person gives his name and address and otherwise satisfies the police officer that the person will duly answer any summons or other proceedings which may issue or be taken against that person. — (5) A police officer who exercises the powers conferred under this section shall (a) (b) (c) (d) identify himself beforehand; record the action; record the items taken; make a report regarding such exercise and make it available for the superior. 58. Power to arrest without a warrant Subject to Article 49 of the Constitution, a police officer may without a warrant, arrest a person— (a) who is accused by another person of committing an aggravated assault in any case in which the police officer believes upon reasonable ground that such assault has been committed; (b) who obstructs a police officer while in the execution of duty, or who has escaped or attempts to escape from lawful custody; N18 - 35 [Issue 1]