Munich Airport in Germany briefly delayed the relaunch of flight operations on Saturday morning local time due to drone sightings, after previous UAV sightings earlier halted all traffic at the airport for several hours.

The German authorities said the decision to close the festival grounds was taken after an earlier explosion in a residential area of the city that appeared linked to a domestic dispute.

As flight operations largely returned to normal at Munich Airport on Sunday, German Defence Minister Boris Pistorius called for calm following repeated sightings of drones over some of the nation's largest and busiest airports.

MUNICH (Reuters) -Drone sightings overnight at Germany's Munich airport led to the cancellation and diversion of dozens of flights on the eve of a national holiday, leaving nearly 3,000 passengers stranded and leading politicians to call for a tougher response to drone threats,

The Germany U-21 squad has been selected and there is a strong group assembled.