By Laura Sharman, CNN(CNN) — 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. Munich’s two runways were first closed overnight into Friday due to the drone sightings. Around 6,500 passengers were affected by the latest temporary shutdown, with 23 diverted flights plus 58 cancellations and delays. Europe has been on edge in recent weeks due to repeated unexplained drone sightings over civilian and military airports in Denmark, Germany and Norway. Drone watch in Western EuropeMunich becomes the latest European airport to close after sightings of drones nearby.