law: Code of Criminal Procedure Act, 1973
  377.Appeal by the State Government against
  
  sentence.-
  (1) Save as otherwise provided in sub-section
  
  (2), the State Government may, in any case of conviction on a trial held by any
  
  Court other than a High Court, direct the Public Prosecutor to present an
  
  appeal to the High Court against the sentence on the ground of its inadequacy.
  (2)If such conviction is in a case in which the offence has been investigated
  
  by the Delhi Special Police Establishment, constituted under the Delhi Special
  
  Police Establishment Act, 1946, (25 of 1946) or by any other agency empowered
  
  to make investigation into an offence under any Central Act other than this
  
  Code, the Central Government may direct the Public Prosecutor to present an
  
  appeal to the High Court against the sentence on the ground of its inadequacy.
  (3) When an appeal has been filed against the sentence on the ground of its
  
  inadequacy, the High Court shall not enhance the sentence except after giving
  
  to the accused a reasonable opportunity of showing cause against such
  
  enhancement and while showing cause, the accused may plead for his acquittal or
  
  for the reduction of the sentence.