German authorities have shut down Munich Airport for the second time in less than 24 hours after more suspected drone sightings.

The closures are the latest after mysterious drone overflights in the airspace of European Union member countries.

The airport suspended flight operations on Friday night until further notice "as a precautionary measure due to unconfirmed sightings," the statement said.

Germany's air traffic control previously restricted flights at the airport on Thursday night and then halted them altogether, the airport said in a previous statement. Seventeen flights were unable to take off, affecting almost 3,000 passengers, while 15 arriving flights were diverted to three other airports in Germany and one in Vienna, Austria.

Flights in and out of the airport then resumed

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