Serbia scrambled military aircraft on 6 November after air traffic services reported an alleged explosive device aboard a Wizz Air passenger flight from Brussels to Sofia, the Defence Ministry said through the government’s official news service. [1]

The fighters visually identified the aircraft and escorted it to the Bulgarian border before returning to Batajnica. Some air-defence units and search-and-rescue forces were placed on maximum alert. The statement describes a response to a reported threat, not confirmation that explosives were found. [1]