Prison guards shot into a crowd to stop 200 rioting inmates at California's Folsom State Prison, wounding five, authorities said Saturday.
Another two inmates were injured by other prisoners during Friday's riot, which began at about 7 p.m. in the main exercise yard and ended after 30 minutes. Prison spokesman Lt. Anthony Gentile said officers fired after other efforts to break up the riot failed.
None of the inmates suffered life-threatening injuries, and none of the 45 to 50 officers who responded were hurt. All seven of the injured inmates were listed in stable condition late Saturday.
The prison, made famous in the Johnny Cash song "Folsom Prison Blues," could remain on lockdown for the next several weeks during an investigation.