Swedish police deployed patrols and helicopters at the Forsmark nuclear plant to search for a large drone seen flying over the site late Friday, but was unable to catch up with the unmanned vehicle, police said Saturday.
The incident came a day after the Swedish army began patrolling the main town on the Baltic island of Gotland, amid escalating tensions between NATO and Russia and the recent deployment of Russian landing ships in the Baltic Sea.
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Forsmark, Sweden’s largest electricity producer, is located on the Baltic Sea coast about 150 kilometers (93 miles) north of the capital, Stockholm.
The drone, first seen by a security guard, was seen by the police moving around the factory before disappearing towards Grasso Island.
“The police continue to try to locate the drone, even with (its drones), but to no avail,” the police force said in the incident report on its website, adding that there were no signs that the drone had dropped anything in the area or real estate.
It also cited unconfirmed reports of possible sightings of drones at the Ringals nuclear plant on the country’s west coast.
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