315 ILCS 20/29
All subpoenas issued under the terms of this Act may be served by any person of full age. The fees of witnesses for attendance and travel shall be the same as fees of witnesses before the circuit courts of this State. Whenever a subpoena is issued at the instance of a party to any proceeding before the Redevelopment Commission, that party may be required to bear the cost of service thereof and to pay the fee of the witness, and in such case the Redevelopment Commission shall have power, in its discretion, to require a deposit to cover the cost of the service and the payment of the legal witness fee and mileage to the witness when served with subpoena. A subpoena issued as provided in this Act shall be served in the same manner as a subpoena issued out of a court.
Any circuit court of this State, upon application of the Redevelopment Commission, may, in its discretion, compel the attendance of witnesses, the production of books, papers, accounts and documents, and the giving of testimony before the Redevelopment Commission, by an attachment for contempt or otherwise, in the same manner as production of evidence may be compelled before the court.
The Redevelopment Commission or any party may in any such investigation or hearing cause the deposition of witnesses residing within or without the State to be taken in the manner prescribed by law for like depositions in civil actions in the circuit courts of this State and to that end may compel the attendance of witnesses and the production of papers, books, accounts and documents.
The Redevelopment Commission may require the production within this State at such time and place as it may designate of any books, accounts, papers or documents kept by any Neighborhood Redevelopment Corporation in any office or place without this State, or at its option, verified copies in lieu thereof, so that an examination thereof may be made by the Redevelopment Commission or under its direction.
315 ILCS 20/29