Carian mengenai topik asphyxiation

Kenneth Smith, convicted of a 1988 murder-for-hire was a rare prisoner who had already survived one execution attempt.

United Nations said the untested method may subject him to "cruel, inhuman or degrading treatment or even torture."

The late actor apparently suffered from Lewy body dementia, a neurodegenerative disease that alters mood, movement and provokes hallucinations.