Overview

• Police briefly shut Aalborg’s airspace late Thursday to early Friday before reopening at 00:35 local time, forcing a KLM return flight and an SAS cancellation.
• The latest alert followed multiple sightings this week over Aalborg, Esbjerg, Sønderborg and the Skrydstrup air base, after earlier disruptions at Copenhagen and reports of activity at Billund.
• Authorities describe the activity as systematic and professionally executed, with police, the armed forces and intelligence services leading investigations.
• NATO said it is treating the incidents very seriously after Secretary‑General Mark Rutte spoke with Prime Minister Mette Frederiksen, as Denmark accelerates procurement of detection and neutralization systems.
• Officials report no proof linking Russia to the events as Moscow denies involvement, and Norway seized a drone near Oslo operated by a foreign national with no established tie to the Danish cases.