Persons within the Secretary of State Department of Police who exercise these powers are conservators of the peace and have all the powers possessed by policemen in municipalities and sheriffs, and may exercise these powers anywhere in the State in cooperation with local law enforcement officials. These persons may use false or fictitious names in the performance of their duties under this Section, upon approval of the Director of Police-Secretary of State, and shall not be subject to prosecution under the criminal laws for that use.
625 ILCS 5/2-116