DELANO, Calif. — An inmate was stabbed to death at Kern Valley State Prison, according to the California Department of Corrections and Rehabilitation.

According to the CDCR, around 10 a.m. on February 14, inmates 23-year-old Brian Alatorre and 44-year-old Jose Ramos attacked 44-year-old Sergio Robles with "inmate-made stabbing weapons." CDCR says officers responded to the incident and gave orders for Alatorre and Ramos to stop. Both Alatorre and Ramos complied with orders, the CDCR says.

Robles suffered multiple stab wounds to his head, back, and upper body. He was taken to to the prison's Triage and Treatment area and then transported to an outside hospital. Robles was pronounced dead at the hospital at 10:53 a.m.

Robles was received from Los Angeles County on Nov. 19, 1996, to serve a life sentence with the possibility of parole for conspiracy to commit first-degree murder and attempted first-degree murder.

Alatorre was received from Imperial County on March 2, 2018, to serve a life sentence with the possibility of parole for kidnap/carjacking and second-degree robbery.

Ramos was received from Los Angeles County on Jan. 18, 2002, to serve a life sentence with the possibility of parole for attempted second-degree murder and assault with a firearm. He also received a conviction from Kings County in August 2008 for assault by a prisoner with a deadly weapon or force likely to produce great bodily injury, his third strike.

Following a postmortem examination, the cause of death was multiple stab and incised wounds and the manner of death was homicide.