An inmate at a California prison is accused of killing his cellmate, who was convicted of multiple charges, including child trafficking.

The California Department of Corrections and Rehabilitation (CDCR) said Monday it is investigating a homicide that occurred Saturday at Kern Valley State Prison.

Gregory Clark, 58, was spotted by officers in his cell with blood on his clothes around 3:19 p.m. Saturday, according to CDCR. His cellmate Darius Swain, 41, was seen unresponsive in the cell, prompting a call for assistance.

Clark was removed without incident and medical personnel, who called 911, began life-saving measures on Swain.

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An inmate at California’s Kern Valley State Prison is accused of killing his cellmate, who was serving life in prison with the possibility of parole for several charges, including child trafficking. (Luis Sinco/Los Angeles Times via Getty Images)

Swain was pronounced dead at 3:48 p.m. by paramedics in the jail’s treatment and triage area.

He arrived in prison in March 2019 in Alameda County, where he was sentenced to life with the possibility of parole for trafficking in persons by force of a minor, pimping, complicity, second degree robbery and felon in possession of a firearm.

Darius Swain, 41, was pronounced dead Saturday at California’s Kern Valley State Prison. (California Department of Corrections and Rehabilitation)

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Clark was placed in restrictive housing pending an investigation by the jail’s Investigative Services Unit.

He arrived at the Los Angeles County Jail in March 2011, where he was sentenced to 22 years for domestic violence, enhancement for use of a deadly weapon, prior prison sentence, and prior felony conviction.

On January 25, 2021, he was sentenced to an additional two years in Kern County for assault by a prisoner with a deadly weapon.

Gregory Clark, 58, is accused of killing his cellmate, Darius Swain. (California Department of Corrections and Rehabilitation)

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The Kern County Coroner will determine Swain’s cause of death. Details of what happened between the two men were not available.