Bureau of Investigation

Mike Sullivan, Chief Criminal Investigator

The Bureau of Investigation’s primary function is to perform follow-up investigation and trial preparation on cases submitted for prosecution by law enforcement agencies in Sacramento County.  In addition to trial preparation and follow-up, the Bureau is also the primary investigative agency on a wide variety of cases where the District Attorney  has a unique legal mandate or specific investigative expertise or resources.  Bureau members conduct some of the most unique, sensitive, and complex criminal investigations in law enforcement.

The Bureau’s staff includes a Chief Investigator, Assistant Chief Investigator, Lieutenants, Criminal Investigators, Investigative Assistants, Process Servers, Clerical Support, Investigative Interns, and Volunteers.

All Criminal Investigators are sworn California Peace Officers, and the Bureau of Investigation is accredited by the California Commission on Peace Officer Standards and Training.

The Bureau has personnel assigned to the following units:

  • Homicide

  • Gangs

  • Narcotics

  • DNA Cold Case

  • Sexual Assaults

  • Domestic Violence

  • Human Trafficking

  • Computer Crimes

  • Career Criminal

  • Child Abduction

  • Juvenile

  • Prison Crimes

  • Felony Support

  • Evidence

  • Consumer Fraud / Environmental Crimes

  • Insurance Fraud

  • Real Estate Fraud

  • Special Investigations

  • Community Prosecution

The Bureau of Investigation strives to recruit the “best of the best” for all positions.  Visit our Employment page here https://www.sacda.org/about/employment/  for more information.

Remembering Our Fallen Officer

Investigator Grant Loren Wilson was killed and his partner critically wounded during a shootout that ensued while serving an arrest warrant in Sacramento County on August 1, 1981.  Wilson, age 32, had been a deputy with the Sacramento County Sheriff’s Department before coming to the District Attorney’s Office.  We will never forget the ultimate sacrifice he made for The People.

End of Watch
August 1, 1981