The Criminal Investigation Division is commanded by Captain Mario Perea and overseen by Lieutenant Michael Cortez and Sergeant Elizabeth Cantu, who supervise three detectives. Investigating crime represents the most obvious responsibility of the Criminal Investigations unit. Personnel in these bureaus are responsible for follow-up investigations of criminal cases. They work closely with victims, witnesses, citizens, and other law enforcement agencies to solve problems and crimes.
Detectives generally specialize in areas such as major crimes, property crimes, personal crimes, juvenile and sex crimes, and white collar crimes (frauds, forgeries and counterfeiting). Depending on their assignment, investigators carry a continuous "case load". The CID supervisors will assign cases depending on their significance and solvability factors. Solvability factors include those leads which help investigators solve the case. Examples include names or descriptions of suspects, serial numbers or identifying marks on stolen property, or witnesses to the crime.