- Volgograd: Four officials dead in Russian jail hostage-taking BBC.com
- Russia Quashes Deadly Prison Mutiny by Islamist Inmates The New York Times
- ISIS prisoners killed after slashing guards, seizing hostages in Russian jail NBC News
- Russian Authorities Kill Islamist Militants After Prison Uprising The Wall Street Journal
- Russian special forces free hostages taken by four men linked to Islamic State The Guardian
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