On Nov. 25 at approximately 2:45 p.m., staff saw inmates Joshua J. Dunn and Stephen C. Dunckhurst attack another inmate on the Facility B general population yard.
Officers immediately responded and all inmates on the yard were ordered to get down. When Dunn and Dunckhurst ignored the command, officers used pepper spray and blast grenades, quelling the incident.
Responding staff summoned an ambulance for the injured inmate, and provided life-saving measures. The victim was taken to the prison’s Central Health Services Building, where he was pronounced dead at 3:25 p.m. His name is being withheld pending notification of next of kin.
Officers recovered two inmate-manufactured weapons at the scene. No staff members were injured in the altercation.
Dunn and Dunckhurst have been placed in segregated housing pending an investigation into their involvement. Movement on Facility B has been limited to facilitate the investigation.
The Sacramento County District Attorney’s Office is assisting CSP-SAC’s Investigative Services Unit. The Office of the Inspector General has been notified.
Dunckhurst was most recently serving a life with the possibility of parole sentence from Shasta County for a Feb. 27, 2005 vehicle theft as a third-striker. He received an additional six-year sentence on Oct. 17, 2005 for a June 4, 2005 in-custody offense of possession/manufacture of a deadly weapon by a prisoner. On Aug. 18, 2010, Dunckhurst received an additional life with parole sentence in Kings County for an in-prison offense of assault by an inmate serving a life-term. On Nov. 17, 2011, Dunkhurst received an additional two-year, eight-month sentence in Kings County for resisting/deterring officer with threat/violence and removal of weapon from peace officer—both in-prison offenses.
Dunn was received from Sacramento County on Oct. 3, 2017. He was sentenced to four years for first-degree burglary, vehicle theft as a second striker and second-degree burglary as a second striker.
Activated in 1986, CSP-SAC is a high-security prison that houses more than 2,100 inmates and employs about 1,700 people. The institution houses long-term inmates, inmates requiring specialized mental health programming, and inmates with high-risk medical concerns.