Federal Security Service (FSB) officers
© Sputnik
Russia's Federal Security Service (FSB) has prevented terrorist attacks in Crimea that were planned by the Ukrainian Defense Ministry's intelligence agency, the FSB said.

The Main Directorate of Intelligence of the Ministry of Defense of Ukraine (HUR MOU) was preparing to target the Russian peninsula's critical infrastructure, the FSB announced on Wednesday.

A group of infiltrators was discovered near the town of Armyansk in northern Crimea near the Ukrainian border in a special FSB operation over the weekend, the agency said, adding that fire was exchanged as the terrorists were being apprehended.

One FSB officer was killed.

Twenty home-made explosive devices equivalent to more than 40 kilos of TNT, as well as ammunition, shells, and other weapons used by the Ukrainian Army's special forces were discovered at the scene.

Two more attempts by Ukrainian raiding and terrorist groups to breakthrough were prevented by Russian forces on Monday. Kiev's armored vehicles provided covering fire for the groups from the Ukrainian side, the FSB said, adding that one Russian serviceman had been killed in that operation.