Section 735 ILCS 5/8-903 - Application to court(a) In any case, except a libel or slander case, where a person claims the privilege conferred by Part 9 of Article VIII of this Act, the person or party, body or officer seeking the information so privileged may apply in writing to the circuit court serving the county where the hearing, action or proceeding in which the information is sought for an order divesting the person named therein of such privilege and ordering him or her to disclose his or her source of the information.(b) In libel or slander cases where a person claims the privilege conferred by Part 9 of Article VIII of this Act, the plaintiff may apply in writing to the court for an order divesting the person named therein of such privilege and ordering him or her to disclose his or her source of information.