Copenhagen Airport resumed normal operations at 7:00 AM UTC on September 23rd, 2025, after unidentified drone activity between 6:05 AM and 7:05 AM UTC caused 51 flights to be diverted and 109 to be cancelled. Danish police stated this morning that a "capable actor" is suspected to be behind the incidents, with preliminary findings indicating the drones may have originated from a ship at sea and arrived from multiple directions and considerable distances. Investigations are ongoing, with Danish police working on the hypothesis that the drones were launched from a vessel at sea, according to a statement made on social media around 11:35 AM UTC. Danish Minister of Defence Troels Lund Poulsen described the activity as "deeply serious and worrying," while Danish Prime Minister Mette Frederiksen characterized it as a "violent attack" within the context of broader European tensions. In related security developments, NATO has condemned Russian airspace violations, and Denmark has activated its national crisis coordination team to level 1 for enhanced monitoring. This follows earlier drone sightings and arrests of two foreign nationals for illegal drone operation near Oslo airports on September 22nd. Malmö residents also reported drone alarms on the nights of September 22nd and 23rd, though police could not confirm sightings. US and UK Boeing RC-135 aircraft were noted in the vicinity, though their involvement in the incident has not been confirmed by authorities. The Danish national crisis coordination team has been activated to level 1 for enhanced monitoring and preparedness.
