Sept 26 (Reuters) - The airspace over Denmark's Aalborg

Airport was reopened early on Friday after a closure for the

second night in a row due to suspected drone activity, police

said.

"The airspace over Aalborg Airport has been reopened on

Friday at 00:35 (2235 GMT) after having been shut down due to

suspicion of drone activity," police said in a post on social

media X.

The airspace over Aalborg Airport was closed nearly an hour

earlier at 11:40 p.m. local time (2140 GMT) on Thursday after a

suspected drone sighting in the area, police told news agency

Ritzau.

On the previous evening, Aalborg airport, used for

commercial and military flights, was closed for about three

hours due to drones in its airspace, just days after the

country's main Copenhagen airport was shut over drone sightings

that raised European security concerns.

Denmark's defence minister said on Thursday the nightly

drone sorties were hybrid attacks, combining military and covert

tactics, and were aimed at spreading fear.

Danish officials said it was still unclear who was behind the

incidents, and Denmark had not yet decided whether to invoke

NATO's Article 4, which allows members to request consultations

over any security concerns.