Guards shot at least two prisoners yesterday as they broke up a fight involving 50 inmates at a prison east of Sacramento, corrections officials said.
Inmates stabbed each other during the fight, and some employees suffered minor injuries as they intervened.
The outbreak was in a maximum security area of the California State Prison, Sacramento.
The two inmates hit by gunfire, and eight other inmates with stab wounds and blunt force trauma, were taken to outside hospitals.
Their condition was not known last night.
