Any Court, who has reason to believe that the person against whom Summons were issued under Section 91 of Cr.P.C. or a requisition made under Section 92 of Cr.P.C. for the production of document, parcel or thing and the person who received the Summons or request but did not deliver the required things to the Court.
Otherwise, the Court would not know in whose possession the required things are with. It then issue a Search Warrant in the name of a person it identified to conduct search and who can search the premises or the place as per the procedures laid down in the Cr.P.C.
Only Chief Judicial Magistrate or above his ranks are authorised under Section 92 of Cr.P.C. to issue Search Warrant against the Postal or Telegraph Authority.