The airports in Copenhagen and Oslo, the two busiest in the Nordic region, were shut for hours last night after drones were observed in their airspace late on Monday, leaving tens of thousands of passengers stranded as flights were diverted, delayed and cancelled. Police officers stand guard after all traffic has been closed at the Copenhagen Airport due to drone reports in Copenhagen, Denmark. Photograph: Steven Knap/Reuters The Danish and Norwegian authorities are understood to be in contact in case the two incidents were linked, NRK reported.
"The drones have disappeared and the airport is open again," Deputy Police Inspector Jakob Hansen told reporters. "We didn't take the drones down," he added. The airport was closed for several hours before reopening early Tuesday, causing numerous delays and travel disruptions to 20,000 passengers, airport officials said. Hansen said police were cooperating with the Danish military and intelligence service to find out where the drones had come from.