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:
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Homicide
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Gangs
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Narcotics
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DNA Cold Case
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Sexual Assaults
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Domestic Violence
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Human Trafficking
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Computer Crimes
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Career Criminal
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Child Abduction
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Juvenile
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Prison Crimes
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Felony Support
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Evidence
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Consumer Fraud / Environmental Crimes
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Insurance Fraud
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Real Estate Fraud
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Special Investigations
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Community Prosecution