Airports in Copenhagen and Oslo reopened on Tuesday, police said, hours after unidentified drones in their airspace caused flight diversions and other travel disruption. In the Danish capital Copenhagen, police said several large drones seen over the airport for several hours late on Monday eventually flew away on their own. He said police were also working with colleagues in Oslo after drone sightings in the Norwegian capital also caused the airport to close for several hours. “We had two different drone sightings,” Oslo airport spokeswoman Monica Fasting told AFP. “We have concluded that this was what we would call a capable operator,” Danish police Chief Superintendent Jens Jespersen told reporters on Tuesday, referring to the drones observed in Copenhagen.