(20 ILCS 3955/17) (from Ch. 91 1/2, par. 717)
    Sec. 17. In the course of an investigation, a regional authority may enter and inspect the premises of a service provider or State agency and question privately any person therein within reasonable limits and in a reasonable manner. Whenever possible, prior notice shall be given the parties regarding the nature, location, and persons involved in a particular investigation.
(Source: P.A. 80-1416.)