India, Sept. 30 -- Estonian authorities said on Tuesday that an arson attack carried out last month on a defence company that provides military vehicles to Ukraine was an act of sabotage commissioned by Russian security services.

Foreign Minister Margus Tsahkna said that "such actions are absolutely unacceptable" and that Russia's charge d'affaires in Tallinn was being summoned to his ministry. A fire broke out overnight on August 15 at a building in the Estonian capital used by Milrem Robotics, but was quickly brought under control, the BNS news agency reported. On August 17, two Latvian suspects were detained in neighbouring Latvia, and a third followed the next day. The suspects were handed over to Estonia.

Milrem has supplied TheMIS...