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A condemned murderer has become the 62nd inmate to die from natural causes while on California's death row since 1978, when the state reinstated capital punishment.

Albert Ruiz, 51, was pronounced dead early Sunday morning; he died of natural causes in the On-Site Acute Hospital Unit at the California Medical Facility in Vacaville, according to a press release from the California Department of Corrections and Rehabilitation.

CDCR said that Ruiz was sentenced to death in 2003 for the May 1998 murder and robbery of a Merced liquor and grocery store owner, Abdo Muhammed, 42, and the murder of Antonio Cruz, a 74-year-old customer in the store.

There are 746 inmates on California's death row, according to CDCR. Since 1978, 22 condemned inmates have committed suicide while 13 have been executed in California. One was executed in Missouri. Six have died from other causes; the cause of death in one of those cases is pending.