Overview
- The officer was detained Tuesday and remains in London custody as British counterterrorism police prepare imminent charges under the National Security Act.
- He has been identified as Lt. Col. Brandon Carroll Tyner, a 41-year-old senior human-resources (G-1) officer assigned to NATO’s Allied Rapid Reaction Corps at Imjin Barracks who served tours in Afghanistan, Qatar and Iraq.
- Police allege violations of Sections 1 and 3 of the 2023 National Security Act for assisting a foreign intelligence service and obtaining or disclosing protected information.
- The arrest followed a coordinated operation involving Counter Terrorism Policing London, MI5, the FBI and U.S. Army counterintelligence with searches at two Gloucestershire locations, and U.S. officials say investigators currently believe no protected material reached Russia.
- After British proceedings conclude, U.S. military authorities plan separate prosecution under the Uniform Code of Military Justice and the case has prompted reviews of access controls and insider-threat safeguards at multinational NATO facilities.