Susanville, CA…High Desert State Prison (HDSP) is investigating an incident that left one inmate dead. The incident occurred just after 1:30 p.m. on a recreation yard at the prison Saturday, Oct. 15, when an inmate was attacked by another inmate. Staff recovered one inmate-manufactured stabbing weapon at the scene. No staff members were injured in the incident. Inmate Douglas Maynard, 53, succumbed to his injuries and was pronounced deceased at 1:50 p.m.

HDSP investigators identified Robert Stockton, 39, as a suspect in the attack. Stockton was received by the California Department of Corrections and Rehabilitation (CDCR) from Tehama County on Oct. 18, 1995, to serve a sentence of life with the possibility of parole for first-degree murder and use of a firearm.

Maynard was received by CDCR on Sept. 5, 1996, from Sacramento to serve four years for first-degree burglary. While incarcerated, he was also convicted of two additional counts of first-degree burglary and one count of first-degree robbery committed prior to his initial arrest. While incarcerated, he was also convicted of assault by a prisoner with a deadly weapon and possession of a deadly weapon by a prisoner. At the time of his death, he was serving a sentence of life with the possibility of parole.

In addition to HDSP’s investigation, the Lassen County Sheriff’s Office and the Lassen County District Attorney’s Office are also investigating. The Office of the Inspector General was notified.

High Desert State Prison, located in Lassen County, opened in 1995 and houses approximately 3,500 minimum-, medium- and maximum-custody inmates. The institution provides academic classes, rehabilitative programs and vocational instruction, and employs more than 1,200 people.