A violent uprising at the IK-19 Surovikino maximum security prison in Russia's Volgograd region, led by inmates identifying as ISIS militants, resulted in the deaths of four prison guards and the brief hostage-taking of several others. Russian special forces, including snipers from the National Guard, intervened and killed the four attackers, freeing all hostages. The inmates, who were from Uzbekistan and Tajikistan, reportedly staged the revolt during a disciplinary commission meeting, wielding knives and attempting to detonate a suicide vest. Videos from the scene showed bloodied prison staff and attackers waving ISIS flags, claiming the attack was revenge for the persecution of Muslims. This incident follows a similar ISIS-affiliated prison uprising in June.