Air traffic at Aalborg Airport in northern Denmark was temporarily suspended on the evening of Wednesday, 24 September, after unidentified drones were detected in the airspace around the airport at around 9:44 p.m.
Operations at the airport, which handles both civilian and military flights, were halted until 4 a.m. on Thursday, 25 September.
That same evening, drone activity was also reported near airports in Esbjerg, Sønderborg and Skrydstrup, although these airports remained open. A similar incident occurred the day before, on Tuesday, 23 September, in Copenhagen.
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Danish ministers warn of ongoing drone threats
Danish Justice Minister Peter Hummelgaard said at a Thursday press conference that the hybrid attacks are intended to spread fear and warned that such threats are likely to continue. He added that Denmark plans to strengthen its capabilities to detect and neutralize drones.
From left: Danish Defence Minister Troels Lund Poulsen and Danish Justice Minister Peter Hummelgaard during a press conference at the Ministry of Defence in Copenhagen, Denmark, 25 September 2025. Photo: Emil Helms DENMARK OUT/PAP/EPA
Defense Minister Troels Lund Poulsen emphasized that the incidents involve professional actors, though he stressed that there is no direct military threat to Denmark.
Authorities plan to discuss the events with EU and NATO partners, and Poulsen suggested that similar hybrid incidents may continue in the future.
The head of the Danish National Police noted that comparable events have also occurred near military sites.
Investigations into all cases are ongoing, and authorities have urged witnesses to provide any relevant information.
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Source: IAR/EBU