Munich airport suspended operations on Thursday night after air traffic control officials reported multiple drone sightings. The airport cancelled 17 flights and diverted 15 others to Stuttgart, Nuremberg, Vienna, and Frankfurt. Suspension & Security TensionsGerman air traffic control restricted flight operations at 10.18 pm local time on Thursday and then suspended them completely. Flight tracking service Flightradar24 reported that the airport would stay closed until 4.59 am local time on Friday. Drone sightings disrupted flights last week in Denmark and Norway.