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County of Sonoma California
Office of the District Attorney

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Bureau of Investigations

The Sonoma County District Attorney’s Bureau of Investigation consists of investigators (sworn peace officers), legal assistants and a secretary.

The Bureau’s mission is to provide professional, high-quality investigative and trial support services to the prosecutors.

Bureau investigators average fifteen years of law enforcement experience, typically with a police or sheriff’s department, and at least 3 years as a detective before making the transition to this office. They are recruited from the most highly skilled men and women in the law enforcement field and they must have achieved an excellent reputation for integrity, team work, and competence in their profession.

All Bureau staff members are an integral part of the District Attorney’s processes and programs. They assist prosecutors in preparing and organizing cases for court, which includes locating critical witnesses, organizing evidence for presentation at trial, and conducting pretrial investigations.

In addition, they often assist other local, state, and federal law enforcement agencies in a variety of investigations.

Bureau members provide prosecutors and the public with a wide variety of investigative expertise in criminal matters such as:

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