law: Narcotic Drugs and Psychotropic Substances Act, 1985
  43. Power of seizure and arrest in
  
  public places.
  Any officer of any of the departments mentioned in section 42
  
  may-
  (a) seize, in any public place or in transit, any narcotic drug
  
  or psychotropic substance in respect of which he has reason to believe an
  
  offence punishable under Chapter IV has been committed, and, along with such
  
  drug or substance, any animal or conveyance or article 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 an offence punishable under
  
  Chapter IV relating to such drug or substance;
  (b) detain and search any person whom he has reason to believe
  
  to have committed an offence punishable under Chapter IV, and, if such person
  
  has any narcotic drug or psychotropic substance in his possession and such
  
  possession appears to him to be unlawful, arrest him and other person in his
  
  company.
  Explanation.- For the purposes of this section, the
  
  expression "public place" includes any public conveyance, hotel,
  
  shop, or other place intended for use by, or accessible to, the public.