In felony cases, Lake County Assistant State's Attorneys from the Felony Review Division, review information supplied by the investigating police department and determine which criminal charges best apply under the Illinois Compiled Statutes for Criminal Law.
Misdemeanor charges are determined by the investigating police department, with the exceptions of certain situations where they are reviewed by the State’s Attorney’s Office. As misdemeanor cases are being prosecuted, the assistant state’s attorney on the case may file different or additional charges.