Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.Jump to contentThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged inAllNewsSportCultureLifestyleAalborg airport in Denmark was closed due to drone sightings, just two days after a similar incident shut down Copenhagen airport. Danish police are investigating the drone activity at Aalborg, which affected four flights, with Eurocontrol imposing a “zero rate” for air traffic until Thursday morning. Danish Prime Minister Mette Frederiksen described the Copenhagen airport shutdown as a “serious attack on critical Danish infrastructure” and did not rule out Russian involvement. Oslo airport in Norway also experienced a three-hour closure on Monday evening due to a drone sighting, resulting in the arrest of two foreign nationals. Norwegian and Danish authorities are in close contact regarding the incidents, which follow a cyber attack that affected hundreds of flights at Heathrow airport in the UK. In fullSecond Danish airport closes due to drone sightingsThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in