30 ILCS 545/3
Any person or persons, commissioner or commissioners, or other officer or officers, as aforesaid, may be prosecuted in any circuit court of this state, on complaint of 2 or more reputable citizens being filed in the office of the clerk of said court; such complaint to be verified by affidavits.
(from Ch. 127, par. 132.53)
(Source: Laws 1965, p. 3749.)