The airspace was closed after a car drove into the fence of the airport, according to a spokesperson at Copenhagen Airport.
One person has since been arrested, according to the police to Danish Ritzau.
We cannot rule out that more will be arrested, says Martin Kajberg, duty officer at the Copenhagen Police.
According to the airport's spokesperson, the incident occurred at around 3 am on Saturday, near a street kitchen located adjacent to the airport.
Almost two weeks ago, a similar incident occurred when a car crashed into the fence at the same location.