Denmark's Aalborg airport faces closure after reports of unauthorized drones entering its airspace, according to local authorities. This incident follows the earlier closure of Copenhagen airport due to a drone incursion, which Prime Minister Mette Frederiksen called 'the most severe attack on Danish infrastructure' so far. Police confirmed drones were spotted near the airport, leading to the airspace being temporarily closed as investigators assess the situation. At least three flights were diverted, and officials remain uncertain about the drones' purpose or their operators. Danish national police noted that the armed forces were also affected, as Aalborg serves as a military base. North Jutland Police stated they were closely monitoring the area but could not detail the number of drones involved. 'We cannot yet comment on the purpose of the drones flying in the area, nor can we say anything about who the actor behind it is,' said Chief Inspector Jesper Bøjgaard Madsen. 'If we get the opportunity, we will take down the drones,' he added. Police assured passengers and residents there is no immediate danger, though they urged the public to maintain distance from the area. They suggested the activity might be a prank, noting the devices could be seen from the ground. Two of the three affected flights were redirected to Copenhagen, while the third was sent to Karup. The European Air Traffic Control Agency declared arrivals and departures at Aalborg would be suspended until 06:00 local time (04:00 GMT) on Thursday. On Monday, Kastrup airport in Copenhagen was forced to close for several hours after multiple drones were sighted. 'It says something about the times we live in and what we as a society must be prepared to deal with,' said Prime Minister Frederiksen. Russian involvement remains unclear, though Kremlin spokesman Dmitry Peskov dismissed the allegations as 'unfounded.' Europe has been on high alert after NATO members reported Russian drone incursions in their airspace. Estonia and Poland recently requested consultations with other NATO members after Russia violated their airspace in separate incidents. Romania, another NATO member, also reported Russian drones breaching its airspace. Russia denied violating Estonia's airspace, claiming the Polish incident was not intentional. It did not comment on Romania's case. After a meeting, NATO issued a statement condemning Russia's actions and warning it would use 'all necessary tools' to defend itself. 'Russia bears full responsibility for these actions, which are escalatory, risk miscalculation, and endanger lives. They must stop,' the statement said. NATO Secretary-General Mark Rutte remarked, 'We are a defensive alliance, yes, but we are not naive, so we see what is happening.' Following his speech to the UN, Donald Trump suggested NATO nations should shoot down Russian planes breaching their airspace.