Danish Prime Minister Frederiksen stated on September 25th, 2025, that she has discussed the "serious situation" of drone activity over Danish airports with the Secretary General of NATO, agreeing that the alliance would collaborate with Denmark on ensuring safety and security. This follows reports of a drone at the harbor in Korsør, where police patrols were dispatched, as announced by the Danish Police on X (formerly Twitter) at approximately 11:47 AM UTC. Police in Korsør are taking the drone report seriously but have indicated there is no cause for public concern. They are appealing for any recordings of the drone activity. The Danish Police also issued a general call for citizens to contact them if they have recordings of drone activity, using the hashtag #politidk. This development occurs as Aalborg Airport has experienced multiple closures and re-openings on September 25th due to unidentified drone activity over military sites and airports in Jutland, according to previous reports. Danish police have stated they have been unable to trace the operators of these drones, which have been observed over military installations housing F-16 and F-35 fighter jets.