Estonia reported a failed attempt to blow up facilities belonging to UAV manufacturer Threod Systems. The country claims that Russian intelligence is behind it, Bloomberg reports. Estonia's Attorney General Esrid Asi said that Russia's involvement is not an assumption but an established fact. Eight Latvian citizens were arrested as part of the investigation. The Prime Minister of Estonia, Kristen Michal, announced that the country is preparing to close the border with Russia to reduce threats to national security. Threod Systems company supplies drones, including to Ukraine. The company specializes in the development and production of unmanned aerial systems. Photo: Threod Systems.