MOSCOW, March 1 (RAPSI) – The Supreme Court has added two months to a prison sentence of Ruslan Buttayev convicted of membership in a cell of the Islamic State (ISIS) terrorist organization prohibited in Russia, the court’s press service has told RAPSI.

Thus, Buttayev will have to serve a 5-year prison term.

However, the court has upheld the sentence of other defendants, Islam Osmanov and Islam Efendiyev, who had received 8 and 7 years in prison respectively.

The defendants have been earlier found guilty of illegal trafficking of fire arms, ammunition, explosives and distribution of drugs.

According to investigators, in 2015, the men joined the ISIS cell based in Kabardino-Balkaria and organized by Robert Zankishiyev, who was put on the federal wanted list and later killed in a counter-terrorism operation in the republic’s capital Nalchik.

Buttayev, Osmanov and Efendiyev were arrested in January-February 2016, the Investigative Committee’s press service reported earlier.