Grayson’s three accomplices managed to escape execution because they were under 18 at the time of Deblieux’s murder

Carey Dale Grayson is set to die by nitrogen hypoxia after being convicted of killing 37-year-old hitchhiker Vickie Deblieux in 1994.

Prison officials in Alabama have executed convicted murderer Carey Dale Grayson, marking the state's sixth death sentence and third using the nitrogen gas method so far this year.