205 ILCS 685/6
Authorized representatives of the Illinois State Police, the Illinois Attorney General, the Illinois Department of Revenue, the State's Attorney's Office or Sheriff's Department of any county of this State, the police department of any municipality of this State, the United States Department of Justice (to include the United States Attorney General, local United States' Attorneys, the Federal Bureau of Investigation, and the Drug Enforcement Administration), and the United States Department of the Treasury (to include the United States Customs Service and the Internal Revenue Service) shall, under rules and regulations prescribed by the Director, be given access to information and documents received by the Director under this Act or information and documents relating to financial transactions received by the Director from the Federal Government as the result of any memorandum or agreement of understanding between any Department of the United States and the State of Illinois.
205 ILCS 685/6