A group of inmates linked to Islamic State stabbed four guards to death in a prison in southern Russia before being killed themselves in an operation by Russian special forces.
The four prisoners, two from Tajikistan and two from Uzbekistan, said in videos passed to media during the stand-off on Friday that they were Mujahideen of the extremist group and were taking revenge for gunmen arrested after storming a Moscow concert hall in March, an attack which ended in 145 people being killed.
Video of three guards lying covered in blood and motionless on a floor at the IK-19 correctional facility in Surovkino in the Volgograd region circulated on Russian channels of the Telegram app. Another guard who was tortured during the stand-off and forced