Police stood guard at Copenhagen Airport after all planes were grounded following drone sightings on Monday (Picture: Reuters)

The latest drone sighting in Scandinavia was made in southern Sweden overnight near the Möcklösundsbron bridge,which is around six miles east of a naval base

He said they reacted quickly to the sighting because it ‘reminds us’ of the events in Denmark and Norway.

In neighbouring Denmark,a ‘capable actor’ is suspected of deploying a fleet of drones to Copenhagen Airport to ‘show off.’

While the sightings were made near the navy base,the military is not involved in the investigation,it is understood.

Jens Jespersen,police inspector in Copenhagen Police,said: ‘There is nothing to suggest that they intended to harm anyone. They intended to show off.

‘It is an actor who has the capabilities,the will and the tools to show off in this way.’

Denmark’s minister of defence,Troels Lund Poulsen,has requested help from his Nordic colleagues and NATO following the incidents,according to Danish TV2.

He asked for assistance with additional technology and capacity.

Drones were also spotted hovering near the Oslo airport,but it is not known whether the incidents were connected.

The aviation industry is on high alert across the US and Europe after a cyber attack disrupted operations across major airports,including Heathrow,Brussels and Berlin.

Airline staff were forced to manually input passenger and baggage details after a cyber incident affecting Collins Aerospace which provides ground services across many airports.

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