Under Frankpledge, every free male over the age of 12 took an oath of loyalty and obligation.

A Concise History of American Policing
Raymond Foster  More Info

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Los Angeles County District Attorney's office (California)

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Leslie T. White

About Los Angeles County District Attorney’s Office

According to the Los Angeles County District Attorney’s Office, the Bureau of Investigation is “staffed by over 260 investigators with full peace officer status, the Bureau of Investigation is the fourth largest law enforcement agency in Los Angeles County. Investigators in the Bureau conduct some of the most unique, sensitive, and complex criminal investigations in law enforcement today. D.A. Investigators are involved in a variety of operations, from high-profile raids in political corruption cases to probes in immigration fraud.

The primary function of D.A. investigators is to provide prosecution support to the District Attorney’s legal staff. By locating and processing prosecution witnesses and conducting supplemental pretrial investigations, investigators strengthen cases for prosecution.

Investigators are assigned to each District Attorney branch location in the County and to a variety of special units. Special units personnel work directly with deputy district attorneys in the office’s specialized programs to combat gangs, public corruption, organized crime, family violence, stalking, hate crimes, consumer fraud, and other high impact crimes. Assisting other law enforcement agencies, when requested, is also an important function of the Bureau of Investigation. Assistance with vehicular and electronic surveillance, photographic services, and document analysis are available to other agencies.”

Books authored by law enforcement officials of the Los Angeles County District Attorney's Office Bureau of Investigations:

Harness Bull
Leslie White  More Info

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