The Division of Criminal Investigation (DCI) is charged with investigating crimes of statewide nature, importance or influence. DCI employs sworn law enforcement officers with statewide jurisdiction. DCI Special Agents and criminal analysts work closely with local, county, tribal, state, and federal law enforcement officials to investigate and prosecute a broad array of crimes, including homicide, arson, financial crimes, illegal gaming, multi-jurisdictional crimes, drug trafficking, internet crimes against children, human trafficking, sexual assault, cybercrimes, homeland security, public integrity, and government corruption.
DCI honors employees who died in service to the department and the people of Wisconsin.
Sign up for Wisconsin Crime Alert Network notices and access information about missing persons, crime alerts, and AMBER Alerts.
Access missing persons resources, alert information, and support services for families, law enforcement, and community partners.
Find online safety resources, reporting information, victim services, and Wisconsin ICAC Task Force materials.
Access human trafficking resources, victim support information, training materials, laws, and task force information.
Learn how Wisconsin DOJ investigates fires and explosions and supports law enforcement and fire departments across the state.
Learn about Wisconsin DOJ's investigative canines, including narcotics, accelerant, and electronic detection canines.
View the DCI response map by county to identify regional criminal investigation coverage across Wisconsin.
Review the Division of Criminal Investigation policy PDF on use of force, de-escalation, reporting, and related procedures.
Find information on safe prescription medication disposal, Drug Take Back Day events, and year-round drug disposal box locations.