Section 90(3) in The Border Security Force Act, 1968
(3)If any such document is, in the opinion of any other magistrate or of any Commissioner of Police or District Superintendent of Police, wanted for any such purpose, he may require the postal or telegraph authorities, as the case may be, to cause such search to be made for, and to detain such document pending the orders of any such District Magistrate, Chief Presidency Magistrate or High Court or Court of Sessions.
