Russian snipers kill Islamist hostage-takers to end prison siege Fox NewsRussia Quashes Deadly Prison Mutiny by Islamist Inmates The New York TimesRussian special forces end hostage crisis in Volgograd Prison, 4 ISIS-aligned inmates neutralised The Times of IndiaISIS, Elite Snipers, 8 Kills: How Deadly Russian Prison Standoff Unfolded NDTV