law: Code of Criminal Procedure Act, 1973
  
  69.Service of summons on witness by post.-
  (1) Notwithstanding anything contained in the
  
  preceding sections of this Chapter, a Court issuing a summons to a witness may,
  
  in addition to and simultaneously with the issue of such summons, direct a copy
  
  of the summons to be served by registered post addressed to the witness at the
  
  place where he ordinarily resides or carries on business or personally works
  
  for gain.
  (2) When an acknowledgment purporting to be
  
  signed by the witness or an endorsement purporting to be made by a postal
  
  employee that the witness refused to take delivery of the summons has been
  
  received, the Court issuing the summons may declare that the summons has been
  
  duly served.