law: Code of Criminal Procedure Act, 1973
  
  426.Sentence on escaped convict when to take effect.-
  (1) When a sentence of death, imprisonment for
  
  life or fine is passed under this Code on an escaped convict, such sentence
  
  shall, subject to the provisions hereinbefore contained, take effect
  
  immediately.
  (2) When a sentence of imprisonment for a term is passed under this Code on an
  
  escaped convict, -
  (a) if such sentence is severer in kind than the sentence which such convict
  
  was undergoing when he escaped, the new sentence shall take effect immediately;
  (b) if such sentence is not severer in kind than the sentence which such
  
  convict was undergoing when he escaped, the new sentence shall take effect
  
  after he has suffered imprisonment for a further period equal to that which, at
  
  the time of his escape, remained unexpired of his former sentence.
  (3) For the purpose of sub-section (2), a
  
  sentence of rigorous imprisonment shall be deemed to be severer in kind than a
  
  sentence of simple imprisonment.