740 ILCS 92/30: Limitation on bringing actions.

(a) In no event may a person bring an action under Section 15 that is based upon allegations or transactions that are the subject of a civil suit or an administrative civil money penalty proceeding in which the State's Attorney or Attorney General is already a party.

(b) A court may not have jurisdiction over an action under this Act based upon the public disclosure of allegations or transactions in a criminal, civil, or administrative hearing, in a legislative or administrative report, hearing, audit, or investigation, or from the news media, unless the action is brought by the State's Attorney, the Attorney General, or a person who is an original source of the information. For purposes of this subsection, "original source" means an individual who has direct and independent knowledge of the information on which the allegations are based and has voluntarily provided the information to the State's Attorney or Attorney General before filing an action under this Act based on the information.