175 US prison inmates injured in riot

Blood-soaked mattresses, singed bedding and abandoned medical supplies littered the campus of a US prison, a testament to the mayhem and violence of a weekend riot that shut down part of the institution and injured about 175 inmates, some critically.

Prison officials staged a tour of the devastation at the California Institution for Men in Chino to reveal the extent of the racially motivated riot that broke out on Saturday evening and raged for four hours before guards could bring it under control.