law: The Chemical Weapons Convention Act, 2000 
  37. Power to call for
  
  information, etc.-
  Any subordinate
  
  officer authorised under section 23 may, during the course of any inquiry in
  
  connection with the contravention of any provision of this Act,- 
  a.     
  
    call
  
  for information from any person for the purpose of satisfying himself whether
  
  there has been any contravention of the provisions of this Act or any rule or
  
  order made or direction issued thereunder;
  b.    
  
    require
  
  any person to produce or deliver any document or thing useful or relevant to
  
  the enquiry;
  c.     
  
    examine
  
  any person acquainted with the facts and circumstances of the case.