Federal Bureau of Investigation (FBI)

Largest investigative agency of the U.S. government. It was founded in 1908 as the Bureau of Investigation within the U.S. Justice Department. J. Edgar Hoover served as its director from 1924 until his death in 1972. Since 1968 the director, who reports to the attorney general, has been appointed by the president for a 10-year term, subject to Senate approval. The FBI employs more than 10,000 special agents. Its responsibilities include investigating violations of federal criminal law (including in the areas of civil rights and organized crime), collecting evidence in civil cases to which the U.S. is a party, and providing internal security.

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Investigation is the process of inquiring into a matter through research, follow-up, study, or formal procedure of discovery.

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