Crime - Sacto 911

Prisoner dead in Folsom; corrections officials say fellow prisoner killed him

The security entrance at California State Prison, Sacramento, is seen in this file photo. An inmate is suspected in the slaying of his cellmate this week.
The security entrance at California State Prison, Sacramento, is seen in this file photo. An inmate is suspected in the slaying of his cellmate this week. Bee file

California Department of Corrections officials say a prisoner is suspected of killing his cellmate at California State Prison, Sacramento.

Sergio Castañeda III, 32, was found lying on his cell floor by a guard at the Folsom facility at around 10:12 p.m. Monday, according to correctional spokesman Lt. LeVance Quinn.

Castañeda was immediately moved to an on-site medical facility and Folsom Fire Department responded to the scene, according to a news release. Castañeda was pronounced dead at 10:51 p.m.

Investigators named his cellmate, Arthur Lane, as a suspect. Lane, 47, was placed in an isolated housing unit at the high-security prison.

Lane is serving a life sentence for a 2003 Sacramento County murder. According to the release, he had a four-year sentence added on from Kern County for assaulting another prisoner with a deadly weapon.

Castañeda was serving a three-year sentence for a Los Angeles County robbery, though four years were added on for battery on a non-prisoner in Monterey County in 2016. He previously served a two-year Riverside County sentence for injury to an elder causing death or great bodily injury.

The Associated Press contributed to this report.
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