law: Contact Labour (Regulation and Abolition) Act, 1970
  26. Cognizance of offences
  No court shall take cognizance of any offence under this Act
  
  except on a complaint made by, or with the previous sanction in writing of, the
  
  inspector and no court inferior to that of a Presidency Magistrate or a
  
  Magistrate of the first class shall try any offence punishable under this Act.