SACRAMENTO, Calif. (AP) — Sirhan Sirhan, imprisoned for more than 50 years for the 1968 assassination of Sen. Robert F. Kennedy, was hospitalized Friday after being stabbed by a fellow inmate at a San Diego prison.

A statement from the state Department of Corrections and Rehabilitation said the stabbing occurred Friday afternoon at the Richard J. Donovan Correctional Facility near San Diego.

"Officers responded quickly, and found an inmate with stab wound injuries. He was transported to an outside hospital for medical care, and is currently in stable condition," the statement said.

The statement did not name Sirhan, but a government source with direct knowledge confirmed to The Associated Press that he was the victim. The source spoke under condition of anonymity, citing prison privacy regulations.

The stabbing was first reported by TMZ.

Corrections officials reported that the alleged attacker has been identified and has been segregated from the rest of the prison population pending an investigation.

Sirhan was convicted of fatally shooting Kennedy on June 6, 1968, immediately after the New York senator declared victory in the California Democratic presidential primary.

Many high-profile prisoners like him are housed in protective custody, but Sirhan had told prison officials several years ago that he wanted to be placed in the general prison population.

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Associated Press Writer John Rogers in Los Angeles contributed to this story.