Estonia has accused Russian security services of ordering an arson attack on a defence factory in Tallinn on August 15, calling it a deliberate act of sabotage.

The target was Milrem Robotics, which makes THeMIS unmanned ground vehicles supplied to Ukraine. Foreign Minister Margus Tsahkna and Prime Minister Kristen Michal said the attack was directed by Russian intelligence. Estonia summoned Russia’s charge d’affaires in protest.

Three Latvian suspects were arrested on August 17-18 and extradited to Estonia. Investigators believe they were recruited to carry out the attack on Russian orders.

Kremlin spokesman Dmitry Peskov denied any Russian involvement. The incident adds to a pattern of suspected Russian sabotage across Europe since the Ukraine war began, including warehouse fires and infrastructure attacks. Estonia, a NATO member, said it would raise the matter with allies and tighten protection of defence-industry sites Tallinn said the plant resumed operations within days, and no injuries were reported in the fire.