Section 40 ILCS 5/16-187 - Custodian of fund - warrants and vouchers - audits(a) The State Treasurer is ex-officio custodian of the funds of the retirement system. He or she may process payments from the funds of the system for the purposes herein specified upon warrants or direct deposit transmittals of the State Comptroller. Commencing January 1, 1987, the State Treasurer shall credit interest, at current rates, for any monies directly held. Such interest shall be calculated using an average daily cash basis. He or she shall be liable on the Treasurer's official bond for the proper performance of duties and be held accountable for all cash and securities in his or her custody. He or she shall keep books and accounts in the manner prescribed by the board, and they shall always be subject to the inspection of the board or any member thereof.(b) The State Comptroller may draw warrants or prepare direct deposit transmittals payable from the fund upon the State Treasurer for the purposes herein provided upon the presentation of vouchers approved by the secretary of the board. The board shall file with the State Comptroller an attested copy of a resolution designating such persons as his authority for making payments upon such vouchers.(c) At the end of each fiscal year, the board shall have the accounts and records of the system audited by a person authorized to practice public accounting under the laws of this state selected by the Auditor General. Copies of all audits performed shall be filed with the State Board of Education and the Auditor General. P.A. 90-448, eff. 8/16/1997.