Under Section 149, every police officer may interpose for the purpose of preventing and shall, to the best of his ability prevent the commission of any ______ offence
Section _______, of Cr.P.C. empowers a police-officer to arrest any person without warrant, or order from a Magistrate who have any design to commit any cognizable offence
A police-officer may _____ interpose to prevent any injury attempted to be committed in his view to any public property, moveable or immovable or the removal or injury of any public landmark or buoy or other mark used for navigation