Penalty for unauthorized entry or overstaying

Without prejudice to the power to arrest and remove any person in the circumstances and manner provided in section 18, any person who— (a) in violation of the direction issued to him under section 11, 12, 13 or 20, enters or returns without permission to the district or part thereof, or such area and any other district or districts or part thereof, from which he was directed to remove himself; (b) enters or returns to any such aforesaid area or district or part thereof with the permission granted under section 19 but does not remove himself from such area upon the expiry of the temporary period for which he was permitted to enter or return contrary to its provisions, or enters or returns thereto without fresh permission after the prior revocation of such permission or after the expiry of the temporary period or after removal upon revocation of permission: shall be punishable with imprisonment for a term which may extend to three years but which, except for reasons to be recorded, shall not be less than six months, and shall also be liable to fine.