MOSCOW, October 13. /TASS/. Operatives from the Russian Federal Security Service (FSB) have foiled a terrorist attack on a high-ranking officer from Russia’s Defense Ministry plotted by Ukrainian special services.

Four suspects have been apprehended, the FSB Public Relations Center told TASS.

TASS has compiled key facts about the incident.

- The FSB has prevented a sabotage and terror attack against one of the high-ranking officers of Russia’s Defense Ministry.

- It was organized by Ukrainian special services together with the international Islamic State organization (IS, recognized as terrorist and outlawed in Russia).