Support Services: Investigations & Support Services

Investigation Division

Investigations Division personnel conduct follow up on most felony crimes and present cases to the Contra Costa County District Attorney’s Office for the filing of charges. Cases assigned include; sexual assaults, domestic violence, stalking, aggravated assaults, homicide, robbery, burglary, auto theft, identity theft, and missing persons. Additionally, the School Resource Officer and the Community Resource Officer are assigned to the Division.

The Investigations Division is also responsible for the youthful offender diversion program, sexual offender and monitoring program, narcotic offender registration, and the issuing of permits for massage therapy, business and residential alarms, concealed weapons, firearm sales, taxi services, and door to door sales.

The Investigations Division can be reached at (925) 288-4630 or email.

Investigation Division Assignments

Personnel Assignment Contact
Lt. David Nichols Division Commander Email
Sgt. Brian Leonard  Investigations Supervisor 
Terrorism Liaison, Massage Establishment permit delegation, Felony DUI, Coroner Follow-up
Det. Michael Robinson Auto Theft, Auto Burglary, Retail Theft, Crime Intel Reports
Det. Chelsea Wright Robbery, Felony Assault, Arson, Terrorist Threats, Domestic Violence, Cold Cases. Email
Det. Danny Johnson Sexual Assaults, Child/ Elder Abuse, Missing Persons, PC 290 & 11590 Registrations Email
 Det. David Garcia Residential and Business Burglaries, Identity Theft, Financial Crimes   Email
Officer Justin Espinoza Community Resource Officer


Support Services


This division is the second largest division in the department and it operates 24 hours a day. It is staffed by one lieutenant, a civilian Support Services Manager, and 18 civilian employees. The civilian employees include dispatcher teams, community service officers, and a computer technician.

They have the responsibility of answering 9-1-1 calls and they see that these calls are immediately dispatched to a police unit or transferred to an appropriate agency, such as the Fire Department.

The dispatch center has direct communication with the police officers in the field by use of the radio system and the in-car computer system called the Mobile Data System (MDS).

The Division Provides:

  • Dispatching
  • Records
  • Technical services
  • Evidence and property
  • Supplies for the entire department
  • Fingerprinting
  • Bicycle licensing
  • Report processing