2nd child molester dies after prison attack by inmate serving life in California
Jonathan Watson is seen in a booking photo obtained by KTLA sister KSEE/KGPE in Fresno.

By Tracy Bloom, KTLA

CORCORAN, Calif. (KTLA) -- A second convicted child molester who was serving a life sentence in Central California has died following an attack by a fellow inmate, state prison officials announced Wednesday.

Graham De Luis-Conti, 62, succumbed to his injuries Sunday, three days after he and another prisoner were beaten at California Substance Abuse Treatment Facility and State Prison in Corcoran.

Jonathon Watson, 41, used a weapon to strike De Luis-Conti and 48-year-old David Bobb, leaving both men with multiple head wounds, according to a news release from the California Department of Corrections and Rehabilitation. The Associated Press reported the weapon was a walking cane.

Bobb died while being transported to a hospital, and De Luis-Conti later died at the medical center. The deaths are being investigated as a homicide, according to the release.

Both men were serving life sentences without the possibility of parole for aggravated sexual assault of a child under the age of 14, officials said.

Watson is serving a life sentence for first-degree murder. He has been at the Corcoran prison since Sept. 4, 2009.

MORE: 2nd Child Molester Serving Life Sentence Dies After Being Attacked by Central California Inmate: Officials - KTLA