A Riverside County inmate sentenced to death was allegedly murdered in a state prison by another inmate, which led to a large mob attack on Friday morning, officials say.
It happened around 10:30 a.m. at Kern Valley State Prison, according to the California Department of Corrections and Rehabilitation.
At that time, homicide investigators say inmate Mario Renteria, 36, from Riverside County, allegedly began attacking the death sentence inmate, identified as 46-year-old Julian Mendez…