A passenger jet heading from Berlin to Hurghada in Egypt landed in Budapest on Monday due to a bomb threat, police said.
Police spokeswoman Viktoria Csiszer-Kovacs said the threat had been aimed at the airline operator but declined to name the company. She said police were searching passengers and luggage on the jet.
Police will give more information later, she said.
According to the Flightradar24 site, flight DE490, an Airbus A321 jet, flying from Schoenefeld airport in Berlin to Hurghada turned back to Budapest from Serbian airspace.
News portal airportal.hu said it was a flight operated by German airline Condor. Condor was not immediately available for comment.
Air Berlin, which flies from Berlin Tegel airport to Hurghada, confirmed it was not one of their planes.