Recent drone activity over several Danish airports is believed to be a part of a hybrid attack, according to Danish Defense Minister Troels Lund Poulsen.

"There can be no doubt that everything points to this being the work of a professional actor when we are talking about such a systematic operation in so many locations  at virtually the same time," Lund Poulsen told a press conference on Thursday.

"This is what I would define as a hybrid attack using different types of drones."

He added that there was no direct military threat against Denmark and that no decision had been reached on invoking NATO Article 4, which would call for consultations among alliance members.

Meanwhile, Justice Minister Peter Hummelgaard added that Denmark will reinforce its capacity to detect and down drones following the incidents.

Where in Denmark were the drones spotted?

Overnight from Wednesday into Thursday, more drones were seen near Aalborg Airport in northern Denmark, as well as three smaller airports in the country, police said.

It led to flights being suspended for several hours at Aalborg Airport, which also serves as a military base.

The new drone activity comes just two days after a similar incident near Copenhagen Airport, which police say was conducted by a "capable actor."

Danish Prime Minister Mette Frederiksen described the Copenhagen incident as "the most serious attack on Danish critical infrastructure to date."

The drone incursions followed similar incidents in Poland and Romania and the violation of Estonian airspace by Russian fighter jets, which have raised tensions amid Russia's ongoing full-scale invasion of Ukraine.

Russia deny involvement as NATO chief says drones can be attacked

Although Danish officials did not directly accuse Russia of the being behind the incidents, there were insinuations during Thursday's press conference that Moscow could be to blame.

In response, the Russian embassy in Denmark rejected any speculation it was involved, writing on social media: "It is evident that the incidents involving reported disruptions at Danish airports are a staged provocation."

"The Russian side firmly rejects the absurd speculations of involvement in the incidents."

Meanwhile, Frederiksen wrote on X she had spoken with NATO chief Mark Rutte and discussed "the serious situation related to drones over Danish airports. We agreed that NATO would work with Denmark on what we can do together to ensure safety and security."

Rutte said he took such threats "very seriously."

"NATO Allies and Denmark are working together on how we can ensure the safety and security of our critical infrastructure," he said on social media.

Edited by: Sean Sinico, Zac Crellin