The California Department of Corrections and Rehabilitation says the riot started at about 11:15 in the morning.

Twelve inmates were stabbed or slashed in the riot.  The Department of Corrections says officers tried non-lethal force to break it up, but also fired multiple rounds from a rifle.  One prisoner was shot. 

The injured were taken to either local trauma or intensive care units.   

Sac Metro Fire responded to the first call of a riot and shooting -15 minutes after it started.  The department sent at least a dozen ambulances.    

 New Folsom's official name is the California State Prison-Sacramento.  It was built in 1986 and holds more than 2600 inmates.  The Department of  Corrections says many are classified maximum security.