(70 ILCS 2605/4.30a) (from Ch. 42, par. 323.30a)

Sec. 4.30a. Any citizen may maintain a suit to restrain a disbursing officer from making any payment in contravention of any provision of this law, or of any rule, regulation or order thereunder. If any sum is paid contrary to any provision of this law, or of any rule, regulation or order thereunder, the sum may be recovered in an action maintained by any citizen against any officer or agent therefor who certified or approved the payment to the Treasurer, or against the Treasurer if he failed to obtain proper certification or approval from the proper officer before making such payment.

(Source: Laws 1963, p. 2477.)