Folsom prison attack, death under investigation

California Department of Corrections and Rehabilitation (CDCR) officials are investigating an inmate death at California State Prison, Sacramento (CSP-SAC) on Saturday. On Saturday, July 23, at 9:39 a.m., CSP-SAC incarcerated persons Daryl Cull and Nicholas Mangelli were observed attacking incarcerated person Wayne Caskey with manufactured weapons on one of the maximum-security yards, according to details released by CDCR on Monday afternoon. Responding staff used less than lethal 40mm direct impact rounds to quell the attack. Caskey was transported to the institution's triage and treatment area and summoned an ambulance; however, Caskey was declared deceased at 10:08 a.m. Cull, 56, was sentenced to CDCR on June 16, 1999, from San Diego County to serve a life with parole sentence for first-degree attempted murder with intentional discharge of a firearm causing great bodily injury/death, torture, assault with semiautomatic firearm with use of a firearm inflicting great bodily injury, battery with serious injury and assault with force likely to produce great bodily injury with inflicting great bodily injury. On Feb. 9, 2012, Cull received a four-year sentence from Lassen County for possession/manufacture of deadly weapon by a prisoner as a second-striker. Additionally, on Jan. 21, 2016, Cull received a four-year sentence from Lassen County for assault with a deadly weapon, an in-prison offense as a second-striker. Mangelli, 32, was sentenced to CDCR on Feb. 2, 2014, from Sacramento County to serve a life without parole sentence for first-degree murder with personal use of a dangerous or deadly weapon. On April 13, 2018, he was sentenced in Lassen County to serve eight years for assault with a deadly weapon, an in-prison offense as a second-striker. Caskey, 59, was sentenced to CDCR on June 15, 2009, in Sacramento County to serve a life with parole sentence for first-degree murder with intentional discharge of a firearm causing great bodily injury/death. While incarcerated, Caskey was sentenced on March 2, 2017, in Sacramento County to serve four years for assault by a prisoner with deadly weapon or force likely to produce great bodily injury, an in-prison offense as a second-striker. Officials have limited movement on the yard to facilitate the investigation being conducted by CSP-SAC's Investigative Services Unit, the Sacramento District Attorney's Office and Sacramento County Coroner. The Office of the Inspector General was notified and the Sacramento County Coroner will determine Caskey's official cause of death.