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Federal Bureau of Investigation
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Large FBI seal mounted on an exterior stone wall at the FBI field office in Indianapolis, Indiana. The seal reads Department of Justice Federal Bureau of Investigation.
Seal of the Federal Bureau of Investigation The FBI seal at the agency's field office in Indianapolis, Indiana.

Federal Bureau of Investigation

United States government agency
Also known as: Bureau of Investigation, FBI, United States Bureau of Investigation(Show More)
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Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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Federal Bureau of Investigation (FBI), principal investigative agency of the federal government of the United States. The bureau is responsible for conducting investigations in cases where federal laws may have been violated, unless another agency of the federal government has been specifically delegated that duty by statute or executive fiat. As part of the Department of Justice (DOJ), the FBI reports the results of its investigations to the attorney general of the United States and...

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