Tennessee Governor Bill Lee granted Tony Carruthers a one-year reprieve after medical staff failed to secure the mandatory backup intravenous line during a scheduled execution.Carruthers, convicted for the 1994 triple murder in Memphis, faces ongoing legal challenges regarding his mental competency and the validity of his conviction based on questionable informant testimony.The failed procedure has reignited national controversy over the use of lethal injection and the state's failure to follow its own established execution protocols.Legal teams and human rights advocates are currently petitioning for clemency citing the prisoner's documented history of severe mental health impairments and brain damage.