Criminal Procedure Act, 1977 (Act No. 51 of 1977)
Chapter 23 : Witnesses
186. Court may subpoena witness
The court may at any stage of criminal proceedings subpoena or cause to be subpoenaed any person as a witness at such proceedings, and the court shall so subpoena a witness or so cause a witness to be subpoenaed if the evidence of such witness appears to the court essential to the just decision of the case.