Code of Criminal Procedure Act, 1973
311.Power
to summon material witness, or examine person present.-
Any Court may,
at any stage of any inquiry, trial or other proceeding under this Code, summon
any person as a witness, or examine any person in attendance, though not
summoned as a witness, or recall and re-examine any person already examined; and
the Court shall summon and examine or recall and re-examine any such person if
his evidence appears to it to be essential to the just decision of the case.