Moscow saved from transport terror attack
The ISIS-linked group was guided from Syrian territory, the FSB press office said.
"After an act of sabotage the terrorists planned to leave for Syria for joining the ISIS in its combat operations," TASS cited the statement as saying.
The secret services have also uncovered an explosives laboratory during searches at the living places of the ISIS members.
"During the searches at the detainees’ living places, the operatives uncovered a laboratory for making explosives, an improvised explosive with striking elements ready for use and components for its production, and also automatic firearms, ammunition, grenades, literature and video records of extremist and terrorist nature," the press office added.