Danish police said that Aalborg airport - which serves both commercial and military flights, had to close due to the appearance of many strange UAVs in the airspace.
The devices were spotted between 9:44 p.m. on September 24 and 0:54 a.m. on September 25, causing all take-off and landing flights to be suspended. Three flights were forced to switch to other airports.
Just two days earlier, Copenhagen International Airport was also stalled for four hours due to a strange UAV, which was called the most serious attack on the country's critical infrastructure by the Danish government.
Northern Jutland Police said that "more than one UAV" appeared near Aalborg airport, flying with bright lights and could not be disabled. The identity of the driver has not been determined. South Jutland police also recorded UAVs appearing near airports in Esbjerg, Sonderborg and Skrydstrup, where the F-16 and F-35 fighter jets were based.
Eurocontrol has announced that all flights in Aalborg will be suspended until 4am. The national police, intelligence and Danish armed forces are coordinating the investigation and contacting neighboring countries. The European Commission sees the series of incidents as part of a persistent model of challenges at the border.
The incident in Copenhagen was initially suspected of being related to Russia, but the Russian Embassy in Denmark denied it. The Norwegian Foreign Minister said that there is no evidence to link the UAV incident in Oslo (Na Uy) with Copenhagen, although the two countries still work closely together.
The police confirmed that there was no direct danger to passengers or people, but the continuous UAV encroachment is raising major concerns about aviation security and national security.
