25. (1) The Authorised Officer shall, simultaneously with the issue of a notice on the owner of a building under section 24, issue a notice upon the occupier thereof, if the occupier himself is not the owner, to vacate such building within the period mentioned therein or within such further period as may be extended by the Authorised Officer. (2) If the occupier does not, in pursuance of a notice under sub-section (1), vacate the building within the aforesaid period, he shall, notwithstanding anything contained in any other law for the time being in force, be liable to be summarily evicted therefrom by the Authorised Officer; and the Authorised Officer may, in effecting such eviction use or cause to be used such force as may be deemed necessary.