(50 ILCS 725/3.2) (from Ch. 85, par. 2555)
    Sec. 3.2. No officer shall be subjected to interrogation without first being informed in writing of the nature of the investigation. If an administrative proceeding is instituted, the officer shall be informed beforehand of the names of all complainants. The information shall be sufficient as to reasonably apprise the officer of the nature of the investigation.
(Source: P.A. 83-981.)