(225 ILCS 725/4) (from Ch. 96 1/2, par. 5407)
    Sec. 4. The Department shall have jurisdiction and authority over all persons and property necessary to enforce effectively the provisions of this Act.
    In aid of such jurisdiction, the Director, or anyone designated in writing by the Director, shall have the authority to administer oaths and to issue subpoenas for the production of records or other documents and for the attendance of witnesses at any proceedings of the Department.
(Source: P.A. 85-1334.)