STARKE, Fla A man convicted of abducting and killing a Miami couple and later stabbing a prison guard to death is set to be executed after nearly four decades on Florida's death row.
Askari Abdullah Muhammad, previously known as Thomas Knight, is scheduled to die by lethal injection Tuesday at Florida State Prison in Starke barring a last-minute, successful appeal.
Gov. Rick Scott signed the death warrant after the Florida Supreme Court in December rejected Muhammad's challenge to chemicals used in the state's execution procedure.
The 62-year-old Muhammad was first condemned to die for the 1974 abduction and killings of Sydney and Lillian Gans of Miami. He was sentenced to die again for killing Correction Officer Richard Burke in 1980 using a sharpened spoon.