Federal Bureau of Investigation is world's top most investigation agency. The agency works under the United States Department of Justice of the government. Its role is to investigate crimes on Native American reservations in the United States under the Major Crimes Act. The agency was formed in the year 1908 as Bureau of Investigation (BOI). Later in the year 1935 its name changed to its present name i.e. Federal Bureau of Investigation(FBI). The agency is having many offices of its own throughout the country. Its main objectives are as to protect the country from any terror related activity, to protect the country against any cyber attack and technology related crimes, to stop public corruption at all levels and stop all violent crime related activities. The contact information like email address, telephone number, website and postal cum official address of Federal Bureau of Investigation is mentioned in below section. Federal Bureau of Investigation is located at FBI Headquarters 935 Pennsylvania Avenue, NW Washington, D.C. 20535-0001, United States. To get more information about Federal Bureau of Investigation, visit their website www.fbi.gov. You can contact Federal Bureau of Investigation by phone at phone number +1 (202) 324-3000.