A Bulgarian Air Force MiG-29 fighter jet was scrambled on June 30 after a passenger aircraft flying from Warsaw to Tel Aviv transmitted transponder code 7500, the internationally recognized signal indicating unlawful interference on board, most commonly associated with a suspected hijacking. The alert triggered standard NATO and national Air Policing procedures, the Bulgarian Ministry of Defense said.

The Israeli military said it scrambled two fighter jets towards a civilian airliner over the Mediterranean Sea on Tuesday, with European officials saying

A technical malfunction triggered a false hijacking alert aboard a Tel Aviv-bound passenger jet on Tuesday, prompting Turkish, Bulgarian and Israeli...