Inmate Killed, Several Injured in San Luis Obispo County Prison Riot

Joaquin Palomino, SF Gate, September 24, 2017

A riot involving more than 160 inmates at a men’s prison in California Sunday led to one death and nine wounded inmates.


Multiple inmates were stabbed during the riot, which began just before 11 a.m. in the East Facility medium-custody yard. Nine men were taken to an outside hospital for further treatment, according to the California Department of Corrections and Rehabilitation.

Mathew Cook, 25, suffered a stab wound during the riot and was pronounced dead Sunday afternoon, prison officials said. Cook, who was convicted in April 2015, was serving a 14-year sentence for several counts of first-degree burglary in San Joaquin County.

After the riot broke out, prison staff responded immediately, firing less-than-lethal rounds and chemical agents to try to control the situation, state officials said. Deadly force was not used, and no staff members were injured.


Prison officials are still in the preliminary stages of investigating the incident, and the cause of the riot is not known.

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