The Criminal Investigations Division is responsible for investigating felony crimes against persons or property and juvenile crimes.  The division is assigned to a variety of cases ranging from homicides, sex offenses, burglaries and other felony cases. 

•  The Division works closely with the Patrol Division in identifying criminal patterns and works to conduct proactive, preventative activities addressing neighborhood concerns.
• Detectives work in conjunction with multiple criminal justice agencies at both the state and federal level including the States Attorneys' Office, the United States Attorney's Office, the Bureau of Alcohol Tobacco and Firearms, the Federal Gang Task Force, the Quad City Metropolitan Enforcement Group, Rock Island County Probation and Patrol, and other police departments on a daily basis. 
• Conducts follow-up investigations on juvenile crime.
• Focuses on early detection and counseling for juveniles to deter juveniles from a career in crime.
• Assists students in recognizing and resisting pressures to experiment with drugs and alcohol.
• Works with other agencies to more effectively deal with criminal activity by and against juveniles.
• Works with school administration and staff to develop and present curriculum on topics that improve the safety and welfare of students in our community.
• Refers juveniles to the Youth Service Bureau by utilizing the Prevention Attention Quick (PAQ) program and Teen Court.