Clause 157

If any person acting with a warrant of arrest issued under section 163 of this Act or acting without a warrant of arrest under sections 158, 159 and 160 of this Act has reason to believe that any person to be arrested has entered into or is within any place, the person residing in or in charge of such place shall, on demand of such person acting as aforesaid, allow him free entry thereto and afford all reasonable facilities for search therein of the person to be arrested.

Where free entry to such place cannot be obtained under subsection (1) of this section it shall be lawful for a person acting with a warrant of arrest or a military policeman acting without a warrant of arrest where such warrant is not immediately obtainable in order to effect an entrance into such place to break open any outer or inner door or window of any place whether that of the person to be arrested or of any other person if after notification of his authority and purpose and demand of admittance duly made he cannot otherwise obtain admittance.