50 ILCS 727/1-5
As used in this Act:
"Law enforcement agency" means an agency of this State or unit of local government which is vested by law or ordinance with the duty to maintain public order and to enforce criminal laws or ordinances.
"Law enforcement officer" or "officer" means any person employed by a State, county, or municipality as a policeman, peace officer, or in some like position involving the enforcement of the law and protection of public interest at the risk of the person's life.
"Officer-involved death" means any death of an individual that results directly from an action or directly from an intentional omission, including unreasonable delay involving a person in custody or intentional failure to seek medical attention when the need for treatment is apparent, of a law enforcement officer while the officer is on duty, or otherwise acting within the scope of his or her employment, or while the officer is off duty, but performing activities that are within the scope of his or her law enforcement duties. "Officer-involved death" includes any death resulting from a motor vehicle crash , if the law enforcement officer was engaged in law enforcement activity involving the individual or the individual's vehicle in the process of apprehension or attempt to apprehend.
50 ILCS 727/1-5