Alabama executes Carey Dale Grayson using nitrogen gas in third U.S. execution of its kind

Alabama executed Carey Dale Grayson on Thursday, marking the third use of nitrogen gas for an execution in the U.S. Grayson, 50, was pronounced dead at 6:33 p.m. at William C. Holman Correctional Facility for a 1994 murder. Grayson was convicted for the murder of Vickie Deblieux, who was hitchhiking in Alabama. He chose nitrogen hypoxia as his method of execution, which has faced criticism for being untested and potentially painful. This execution follows a controversial first use of nitrogen gas in January, which drew international backlash. Grayson is among about 30 inmates on Alabama's death row who have opted for this method.