ISIS-affiliated inmates kill four prison officers at Russian penal colony - CNN
- ISIS-affiliated inmates kill four prison officers at Russian penal colony CNN
- Russia Quashes Deadly Prison Mutiny by Islamist Inmates The New York Times
- Russian special forces end hostage crisis in Volgograd Prison, 4 ISIS-aligned inmates neutralised The Times of India
- ISIS, Elite Snipers, 8 Kills: How Deadly Russian Prison Standoff Unfolded NDTV