20 ILCS 2630/2

The Illinois State Police shall procure and file for record, as far as can be procured from any source, photographs, all plates, outline pictures, measurements, descriptions and information of all persons who have been arrested on a charge of violation of a penal statute of this State and such other information as is necessary and helpful to plan programs of crime prevention, law enforcement and criminal justice, and aid in the furtherance of those programs.