Crime Scene Investigations Unit

The Richmond Police Department currently has six full time officers and one detective working as Crime Scene Investigators (CSI).  This assignment demands highly specialized training and attention to detail.  The Crime Scene Investigators at Richmond PD are sworn officers with full peace officer privileges. These men and women respond to daily calls for service, write tickets, and make arrests, but are primarily responsible for investigating serious crime scenes.
The Crime Scene Investigator works closely with patrol officers and Investigative Services Division detectives to investigate criminal activity.  The main goal of a Crime Scene Investigator (or any investigator) is to gather evidence which might help to answer questions about how a crime occurred and who was responsible. Some of these issues are obvious upon arrival at the crime scene…others require a more in-depth look.
The duty of a Crime Scene Investigator is to examine the scene in such detail that he or she can uncover evidence and clues. Crime Scene Investigators must be both patient and meticulous.  It is not unusual for a Crime Scene Investigator to spend hours on a serious crime scene.  The Crime Scene Investigator will take photos, measurements, and thorough notes at the scene.  He or she will also process the scene for latent (hidden) fingerprints and collect any relevant evidence.  When the Crime Scene Investigator collects evidence, he or she is responsible for booking it into evidence, assuring the chain of custody remains intact, and for testifying about the evidence at trial.
Hollywood portrays crime scene investigation as a very fast process but this is far from reality.  The Richmond Police Department works closely with the Contra Costa County Crime Lab located in nearby Martinez.  Evidence is carefully packaged and sent to the forensics lab for examination and testing.  Test results can return in few days or they can take several months.  Sometimes a suspect remains unidentified for months (or years) until results from the forensics lab matches DNA evidence to a particular person.  DNA evidence has provided detectives with the ability to arrest suspects and charge them with their crimes as well as prove an individual’s innocence.
Contact Information
Forensic Unit
Detective J. Grivetti

Crime Scene Investigators
Officer J. Walker
510-621-1212 x
Friday - Monday
 9:30 PM - 7:30 AM
Officer B. Zeidan
510-621-1212 x7111
Monday - Thursday
3 p.m. to 1 AM

Officer J. Tyner
510-621-1212 x7133
Monday - Thursday
9:30 PM to 7:30 AM

Officer B. Marweg
510-621-1212 x4959
 Tuesday - Friday
6:30 AM to 4:30 PM

Officer S. Andretich 
510-621-1212 x
Thursday - Sunday
3 PM - 1 AM
Officer K. Cubit
510-621-1212 x 
 Saturday - Tuesday
 6:30 AM - 4:30 PM