Byron Black died at 10:43am Tuesday, roughly 10 minutes after the lethal injection started. He could be heard sighing and breathing heavily as the execution began.

Tennessee is set to execute death row inmate Byron Black on Tuesday despite raised concerns about his implanted heart device which could cause a "prolonged and torturous…

Byron Black died at 10:43am Tuesday, roughly 10 minutes after the lethal injection started. He could be heard sighing and breathing heavily as the execution began.

Lawyers for Byron Black, who was convicted of a triple homicide, argued that executing him without deactivating the device would shock him back to life.

Byron Black, 69, was killed by lethal injection for the deaths of Angela Clay, 29, and her daughters, Latoya, nine, and Lakeisha, six, on Tuesday.

Byron Black, convicted of killing his girlfriend and her two young daughters, said he was “hurting so bad” while he was given a lethal injection.