California Substance Abuse Treatment Facility and State Prison, Corcoran, California
January 6, 2019

A prisoner allegedly distracted staff while another prisoner retrieved a homemade weapon and stabbed an officer in the face several times.

From the CDRC Press Release:

At around noon on Sunday, Jan. 6, officials believe inmate Jubenal Mendoza distracted staff while inmate Edwin Perez retrieved an inmate-manufactured weapon and then stabbed the officer several times. Staff responded by using two 40mm less-than-lethal rounds, physical force and expandable batons to stop the attack.

Perez, 31 and Mendoza, 27, were placed in restraints and housed in another institution. Inmate movement at the prison has been restricted to facilitate the ongoing investigation.

The motivations for the attack are unknown at this time.


Attempted Homicide of Correctional Officer Under Investigation“, CDCR News, January 7, 2019.

Inmates collude in knife attack on guard at Corcoran substance abuse treatment prison“, The Fresno Bee, January 7, 2019.