315 ILCS 20/34

Whenever in the judgment of the Redevelopment Commission a Neighborhood Redevelopment Corporation fails or omits, or is about to fail or omit, to do anything required of it by law or by order of the Redevelopment Commission as in this Act provided, or does or is about to do, or permits or is about to permit to be done, anything contrary to or in violation of law or any such order, the Redevelopment Commission shall commence an action or proceeding in the Circuit Court of the county, wherein the Development Area of the Redevelopment Corporation concerned is located, for the purpose of enforcing or preventing such action or omission, either by a mandamus or injunction.