On the evening of September 22, the airspace over Copenhagen and Oslo was breached by drones, resulting in the closure of both airports.
This was reported by agencies including Reuters, Swedish Aftonbladet, and Norwegian Verdens Gang.
Copenhagen police stated that two to three large drones were involved. A major police operation is underway at the scene.
Several flights have been canceled, and others redirected to Malmö airport.
An airport spokesperson confirmed to Reuters that all operations were halted but declined to comment further.
Update: Around 11 PM local time, one aircraft had to make an emergency landing due to fuel shortages for rerouting. A similar situation occurred in Oslo, where military forces detected drones over the Akershus fortress. In response, Norwegian police initiated an operation and reported the arrest of two Singaporean citizens in connection with the incident.
Later, at 11:30 PM, several drones were observed over Oslo Gardermoen airport. Initially, all traffic was redirected to one runway, but an hour later, the airport was completely closed.
"The airspace over Oslo airport has been closed due to a new drone sighting," quoted Verdens Gang communication manager Monika Fasting. 

Reminder: On September 19, three Russian MiG-31 fighters entered Estonian airspace and remained there for about twelve minutes. Later that day, Poland reported that two Russian aircraft flew low over the Petrobaltic drilling platform in the Baltic Sea, violating the security zone above it. On September 21, two German Eurofighter jets were scrambled to intercept a Russian Il-20M reconnaissance aircraft over the Baltic Sea.