Moscow, Dec 9 (IANS/TASS): Around 100 prisoners staged a riot in Russia's Chelyabinsk detention centre Monday night, a report said Tuesday.
Riots broke out after a convict refused to go out of a prison cell on prison guards' direction and asked other prisoners for self-maiming, the Russian federal prison authority said.
The convict's neighbours from other prison cells started knocking on doors, pouring water in the corridor and set fire to mattresses' cotton-wool.
Eight of the 100 inflicted self-injuries, the authority said. There was no immediate report of any casualty.
"All of them received immediate medical aid. Special law enforcement equipment and physical force were not used against prisoners," an official said.
Police cordoned off the detention centre and Chelyabinsk's governor was informed about the riots.