law: Narcotic Drugs and Psychotropic Substances Act, 1985
  42. Power of entry, search, seizure and
  
  arrest without warrant or authorization.
  (1) Any such officer (being an officer superior in rank to a
  
  peon, sepoy or constable) of the departments of central excise, narcotics,
  
  customs, revenue intelligence or any other department of the Central Government
  
  or of the Border Security Force as is empowered in this behalf by general or
  
  special order by the Central Government, or any such officer (being an officer
  
  superior in rank to a peon, sepoy or constable) of the revenue, drugs control,
  
  excise, police or any other department of a State Government as is empowered in
  
  this behalf by general or special order of the State Government, if he has
  
  reason to believe from personal knowledge or information given by any person
  
  and taken down in writing, that any narcotic drug, or psychotropic substance,
  
  in respect of which an offence punishable under Chapter IV has been committed
  
  or any document or other article which may furnish evidence of the commission
  
  of such offence is kept or concealed i1n any building, conveyance or enclosed
  
  place, may, between sunrise and sunset,-
  (a) enter into and search any such building,
  
  conveyance or place;
  (b) in case of resistance, break open any door
  
  and remove any obstacle to such entry;
  (c) seize such drug or substance and all
  
  materials used in the manufacture thereof and any other article and any animal
  
  or conveyance which he has reason to believe to be liable to confiscation under
  
  this Act and any document or other article which he has reason to believe may
  
  furnish evidence of the commission of any offence punishable under Chapter IV
  
  relating to such drug or substance; and
  (d) detain and search, and, if he thinks
  
  proper, arrest any person whom he has reason to believe to have committed any
  
  offence punishable under Chapter IV relating to such drug or substance:
  Provided that if such officer has reason to believe
  
  that a search warrant or authorization cannot be obtained without affording
  
  opportunity for the concealment of evidence or facility for the escape of an
  
  offender, he may enter and search such building, conveyance or enclosed place
  
  at any time between sun set and sun rise after recording the grounds of his
  
  belief.
  (2) Where an officer takes down any information in writing under
  
  sub-section (1) or records grounds for his belief under the proviso thereto, he
  
  shall forthwith send a copy thereof to his immediate official superior.