Weekend clash at Oklahoma prison leaves 4 dead, 4 hurt

Four inmates died of injuries sustained during an attack or fight over the weekend at an Oklahoma prison, officials said, and investigators are trying to determine what sparked the violence. The incident that also left four inmates injured happened around 4 p.m. Saturday at the Cimarron Correctional Facility in Cushing, a community between the state's two largest cities, Oklahoma City and Tulsa.