Swedish police deployed patrols and helicopters to the Forsmark nuclear power plant to track down a large drone seen hovering over the site on Friday evening, but were unable to catch the unmanned vehicle, they said on Saturday.
The incident came a day after the Swedish military began patrolling the main town on the Baltic Sea island of Gotland amid heightened tensions between NATO and Russia and a recent deployment of Russian landing craft in the Baltic.
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Forsmark, which is Sweden’s largest electricity producer, is on the Baltic coast about 150 km (93 miles) north of the capital, Stockholm.
Police saw the drone, first spotted by a security guard, move around the factory before disappearing towards Graso Island.
“Police continue to try to locate the drone, even with their own (drones), but without success,” police said in an incident report on their website, adding that there were no signs. that the drone had dropped anything in the area or landed.
He also cited unconfirmed reports of possible drone sightings at the Ringhals nuclear power plant on the country’s west coast.
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