The DuPage County Sheriff's Office is at the forefront of crime scene investigation using the latest techniques and state of the art scientific methods to conduct a thorough investigation of every crime scene they process.

The Forensic Investigation Unit (FIU) processes crime scenes primarily for the Sheriff's Office, however, it is available to every agency within DuPage County either to process entire scenes, to provide guidance and direction, or for specialty processing of specific items of evidence.

Besides processing scenes for physical evidence the FIU also conducts forensic computer examinations and forensic video analysis on evidence recovered from closed circuit surveillance cameras.

Forensic Investigators also serve as a support unit to the DuPage County Coroner's Office serving as primary evidence technicians for the documentation, collection, and preservation of physical evidence related to all unnatural deaths occurring in the county.

In addition, the unit provides forensic services to three task forces in the county, the DuPage County Major Crimes Task Force, the Felony Investigative Assistance Team and the Fire Investigation Task Force. Eight unit members serve on the Major Crimes Task Force, one as a forensic commander, another as a team leader, and six as team members.