Air Serbia flight JU134 departed Belgrade for Moscow on November 3, 2026, at 6:48 PM but turned back over southern Lithuania before 10:00 PM after airport authorities flagged a security concern involving one passenger. The Airbus A320 returned to Belgrade after passengers had spent more than three hours in the air.
Serbian media identified the passenger as Aleksandar Vulin, Serbia's former intelligence chief. According to reports, someone helped him board without completing required screening, and the airport's corporate security director ordered the return after reviewing surveillance footage. Vulin denies the allegations, stating he completed all required checks, carried no prohibited items, and was being targeted for political reasons following his pro-Russian party's loss in a snap election last month. He said his trip concerned negotiations over Serbia's gas arrangement with Russia.
Air Serbia confirmed that airport authorities requested additional security checks but did not publicly identify the passenger. The airline said it returned in accordance with instructions received.
Passengers and their luggage underwent additional screening in Belgrade. The flight eventually continued to Moscow with a replacement crew, arriving about seven hours late. Vulin was allowed to continue on the delayed flight.
Belgrade's Higher Public Prosecutor's Office has requested an investigation into whether procedures were followed, who authorized the aircraft's return, and what security assessment supported that decision.