Rhode Island General Laws Title 12. Criminal Procedure § 12-12-1.8. Hearing to determine probable cause

At the probable cause hearing the information and exhibits appended to it shall be before the court. The defendant may call witnesses and may introduce evidence bearing on the question of the existence of probable cause to charge him or her. The state may not call witnesses, introduce evidence, or otherwise supplement the exhibits appended to the information unless the court grants leave to do so.