Oct. 4 (UPI) -- Germany's Munich International Airport resumed flights on Saturday morning after drone sightings closed the airport for 7 1/2 hours, the second disruption in 24 hours.

Drones have affected aviation throughout Europe with Russia suspected of launching them. Several European Union members want a multi-layered "drone wall" to quickly detect, track and destroy drones.

The airport said flights stopped at 9:30 p.m. Friday, affecting around 6,500 passengers.

It reopened at 5 a.m. local time when flight arrivals and departures were deemed safe, a call handler fielding passenger inquiries told CNN.

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