law: Official Secrets Act, 1923 
  11. Search-warrants 
  (1) If a Presidency Magistrate, Magistrate of
  
  the first class or Sub-divisional Magistrate is satisfied by information on
  
  oath that there is reasonable.
  ground for suspecting that an offence under
  
  this Act has been or is about to be committed, he may grant a search-warrant
  
  authorizing any police officer named therein, not being below the rank of an
  
  officer in charge of a police station, to enter at any time any premises or
  
  place named  in the warrant, if necessary, by force, and to search the
  
  premises or place and every person found therein, and to seize any sketch,
  
  plan, model, article, note or document, or anything of a like nature, or
  
  anything which is evidence of an offence under this Act having been or being
  
  about to be committed which he may find on the premises or place or any such
  
  person, and with regard to or in connection with which he has reasonable ground
  
  for suspecting that an offence under this Act has been or is about to be
  
  committed.
  (2) Where it appears to a police officer, not
  
  being below the rank of Superintendent, that the case is one of great
  
  emergency, and that in the interests of the State immediate action is
  
  necessary, he may by a written order under his hand give to any police officer
  
  the like authority as may be given by the warrant of a Magistrate under this
  
  section.
  (3) Where action has been taken by a police
  
  officer under sub-section (2) he shall, as soon as may be, report such action,
  
  in a presidency- town to the Chief Presidency Magistrate, and outside such town
  
  to the District or Sub- divisional Magistrate.