Munich airport was forced to halt operations for the second day in a row on Friday over drone sightings, with dozens of flights and more than 6,000 passengers affected.
Airports in Denmark, Norway and Poland have recently suspended flights due to unidentified drones, while Romania and Estonia have pointed the finger at Russia, which has brushed off the allegations.
Munich airport said in a statement that on Friday "from 9:30 pm air traffic was restricted and then cancelled due to drone sightings", meaning 23 incoming flights were diverted and 12 bound for Munich were cancelled.
Forty-six departures from the airport had to be cancelled or delayed until Saturday, with a total of 6,500 passengers affected.
A police spokesman told AFP that there were "two simultaneous confirmed drone sight