Attorneys for Byron Black, a 66-year-old man on Tennessee's death row, have filed a motion for a stay of his execution due to the potential for his implanted defibrillator to trigger a prolonged and gruesome death.

Convicted triple-murderer Byron Black might elude his scheduled execution on Tuesday morning due to a recently claimed intellectual disability and dementia.

Byron Black, a Tennessee death row inmate, has filed a petition for writ of certiorari, or a higher court review, with the United States Supreme Court.