Witnesses -- Judge or juror may be witness -- Procedure.

Utah Code § 78B-1-133, under Part 78B-1-1: Jury and Witness Act.

Utah Code § 78B-1-133

78B-1-133. Witnesses -- Judge or juror may be witness -- Procedure.

The judge or any juror may be called as a witness by either party. It is in the discretion of the court to order the trial to be postponed, suspended, or take place before another judge or jury.