Scientific Investigations Unit (SIU)

The Scientific Investigations Unit (SIU) is the only civilian staffed investigative unit of the Sheriff's Office. The specially trained SIU personnel support Patrol, the Investigations Units of the Sheriff's Office as well as the Coroner Unit.

SIU personnel are trained in crime scene investigation, DNA collection, fingerprint and palm print identification, shoe and tire impression identification, and California property and evidence laws. If you have items that have been retained for an investigation, processing or safekeeping, contact the SIU to check on the status or possible release. Evidence is released by appointment only.

All property releases require an appointment. Please call (442) 265-2105 to schedule an appointment. No property will be released without an appointment.

Scientific Investigations Unit (SIU)

Guns that have been retained for safekeeping or as evidence may not be released without a California Law Enforcement Gun Release (LEGR) document. The LEGR may be downloaded below, then sent to the California Department of Justice with the appropriate fees. Once an eligibility letter is received, you will have 30 days to bring your letter to the Sheriff's Office. Once you bring in your letter, the SIU staff will check your eligibility to receive your weapon. If you are eligible, the weapon will be released to you minus any ammunition. No ammunition will be released.

DOJ Law Enforcement Gun Release Application click here

California Firearms Laws Summary click here

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