Gregory Powell
Gregory Powell, 79, died on August 12, 2012, at the California Medical Facility in Vacaville, where he had been held for decades. The California Department of Corrections attributed his death to terminal prostate cancer. He had been denied parole 11 times, and in October 2011 a request for release on medical grounds was also refused.
Cause of death, as reported: Died of illness. The California Department of Corrections says he died of terminal prostate cancer, and no source in the accounts disputes that cause.
Reported by: California Department of Corrections (the agency that held him). The only account of how this person died comes from the agency that held him.