(source: KXTV -- No access Sacramento, California)(location: Represea, California/ Sept. 19, 2012)[SOT/:Lt. Tony Quinn, Calif. State Prison Spokesman]We think it was spontaneous. To our knowledge, there's been no tension on the yard. So this is something that caught everyone, including our staff, offguard.Just based on the injuries we know they were stabbing-type, ice pick-style weapons. "It takes a couple of days to figure this out. We go over surveillance video. Sometimes in these riots guys are just trying to get out of the way, they're not really involved. It takes a day or two to figure out who was actually involved and who was just a victim of wrong place, wrong time."BC-US--California Prison Riot, 4th Ld,12913 wounded in Calif. prison riot, including 1 shotCalif. prison riot leaves 13 wounded, with 1 shot by guards and 12 others stabbed or slashedFOLSOM, Calif. (AP) _ The injury toll in a California prison riot has risen to 13. The riot occurred Wednesday at the California State Prison, Sacramento in Folsom. Authorities say one of the injured was shot by correctional officers. Corrections spokesman Terry Thornton says the disturbance inside a prison yard broke out shortly after 11 a.m. In addition to the shot inmate, 12 others were treated at a hospital for stab and slash wounds. Authorities earlier said 11 inmates were injured. Prison officials said 60 inmates were involved, but have not discussed what provoked it. Thornton says officers tried to quell the riot by firing non-lethal rounds as well as firing six shots from a rifle. The state plans to investigate the decision to use potentially deadly force, which is a standard procedure.(****END****) VIDEO PRODUCER: ALVA FRENCH---------------------------VIDEO SOURCE: KXTV-----------------------VIDEO APPROVAL: DAVID BRUNS----------------------------VIDEO RESTRICTIONS: COURTESY: KXTV/ EMBARGO----------------------------------MARKET EMBARGO (S): SACRAMENTO, CALIFORNIA--------------------------------