A man believed to have been the longest-serving prisoner in U.S. history has died at the age of 101, having his execution scheduled and postponed eight times as he maintained his innocence despite a murder conviction in Connecticut.

Francis Clifford Smith died in his sleep in late June at 60 West, a secured Connecticut nursing facility that cares for older people in the justice system, according to the facility.

Smith, who was just months away from turning 102, was cremated without a funeral.

“Essentially, he died of old age,” 60 West spokesman David Skoczulek told the BBC. “He had very limited family involvement around his passing but we…

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