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THE WORK OF THE BUREAU OF INVESTIGATION This booklet has been prepared to acquaint peace officers and law-— enforcement officials with the work of the Bureau of Investigation of the United States Department of Justice in its investigation of alleged violations of laws in which the United States is or may be a party in interest, At the head of the Bureau of Investigation in Washington, D. C., is Mr. J. Edgar Hoover, director. Under his jurisdiction there are 30 field offices, including 6 accounting zones, located throughout the United States. Each field office is under the immediate supervision of a special agent in charge, who has jurisdiction in his respective district of the investigation of all reported offenses against the laws of the United States which are handled by the bureau. The Bureau of Investigation has investigative jurisdiction over all violations of Federal Jaws and matters not specifically assigned by congressional enactment, or otherwise, to other Federal agencies. It does not have investigative jurisdiction over violations of the national prohibition, counterfeiting, narcotic, customs and smuggling, postal, or immigration laws. Any information concerning a violation of a Federal law, other than those listed above, which comes to the attention of a law-enforce- ment official or peace officer, should be sent by letter or, if the matter seems to be urgent, by telegram marked “ Government rate collect” to the special agent in charge of the district in which such officer is located. . The address of the Bureau of Investigation field office having juris- diction over the district in which you are located is as follows: 58488° —29 (i) , - ee ew Shem Re me ee ne eee ne een AS AR Se Mee ee we en ee ee a eae oe eee eee nn ae mete