A death row inmate was seen gasping for breath over several minutes while rocking and shaking the gurney restraints as he was put to death in Alabama after making a final expletive outburst. Carey Dale Grayson enjoyed an extravagant final meal before controversially being gassed to death for the murder of a hitchhiker along with his teenage friends. The 50-year-old was pronounced dead at 6.33pm on Thursday after he breathed in nitrogen from a mask under Alabama's new nitrogen hypoxia execution