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This FBI file concerns the investigation of John Anthony Walker Jr. and his brother Arthur James Walker for alleged espionage involving U.S. Navy classified information. The released records describe both men as former Navy personnel with Top Secret/Crypto clearances who later worked as private detectives, and state that the suspected espionage activity began in 1966 and was believed to be continuing. The file includes interview reporting about John Walker's surveillance, telephone-tapping, vehicle-bugging, photography, disguises, and false identifications; Virginia DMV checks on Arthur Walker; and a request to the Postal Service for mail-cover information. FBI memoranda from March through May 1985 document coordination among the Norfolk, FBI Headquarters, Buffalo, and Washington Field offices, including a Norfolk investigative conference and warnings to treat the subjects as armed and dangerous.

Documents span: 1966-1985 | Released in 2 parts
Names in this file: John Anthony Walker Jr., Arthur James Walker
Subjects: espionage, U.S. Navy, Soviet intelligence, surveillance, mail covers, private detectives