Criminal Investigation Division


The Criminal Investigation Division (CID) conducts in-depth investigations into major crimes that occur in the city of Dubuque. Among the crimes most frequently investigated by CID are:

  • Death investigations (homicides, suicides, child deaths, unnatural deaths, fire deaths)
  • Sexual abuse
  • Robbery
  • Arson
  • Child abuse
  • Dependent adult abuse
  • Kidnapping
  • Serious assault
  • Major financial crime
  • Computer related crimes (DEFL)
Criminal Investigation

Division Staff

CID is staffed by a captain, a lieutenant, and eight investigators.  Investigators have received extensive advanced training in crime scene processing, evidence handling, death investigation, and interviewing and interrogation. Investigators work closely with the Dubuque County Attorney’s Office, the Department of Human Services, Riverview Sexual Assault Center and the Department of Corrections for successful investigations and prosecution of cases. 

In addition to the above staff, CID is assigned an additional corporal and two investigators that work primarily in narcotics enforcement and are assigned to the Dubuque Drug Task Force

Additional duties of investigators include DEFL, polygraph examiner, parolee notifications, Drug Court, and public speaking. 

Please contact Capt. Steil or Lt. McClimon for additional information or questions.

Criminal Investigations

Contact Information






Capt. Marty Steil 563-589-4467 8:00 AM- 4:00 PM Mon-Fri Email
Lt. Ted McClimon 563-589-4439 8:00 AM- 4:00 PM Mon-Fri
Cpl. Justin Stair 563-589-4474 7:00 AM - 5:00 PM Mon, Tue, Thurs, Fri Email
Cpl. Isaiah Hoff 563-589-4429 7:00 AM - 5:00 PM Mon-Thurs Email
Cpl. Clark Egdorf  563-589-4430 7:00 AM - 5:00 PM Tues-Fri Email
Cpl. Billy Dieujuste 563-587-3806 8:00 AM - 6:00 PM Tues-Fri Email
Inv. Kurt Rosenthal 563-587-3808 8:00 AM - 6:00 PM Mon-Thur Email
Inv. Nick Schlosser 563-587-3813 8:00 AM - 6:00 PM Tue-Fri Email