Police have thwarted a planned arson attack on a factory producing unmanned aerial systems in eastern Slovakia and detained three foreigners suspected in the attempt.
Two suspects were detained in Slovakia and one in Germany, police said on Facebook on Tuesday.
There was no damage to property nor any injuries, they added.
"A large amount of incendiary mixture, tools, mobile phones, camera and a handwritten plan have been seized," police said, adding that there were about 70 people at the facility at the time of the planned attack.
Investigators charged the suspects with public endangerment committed on commission.
They did not name the factory targeted, nor its precise location, and the suspected commissioning party was not named.
NATO and European Union member Slovakia borders Ukraine in its east.
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