The crimes were carried out in Maryland which has since dropped the death penalty. Higgs was executed at the federal penitentiary in Terre Haute, Ind., and was pronounced dead at 1:23 a.m., according to the Associated Press.
In a statement following the execution, Shawn Nolan, an attorney for Higgs, called him "a fine man, a terrific father, brother, and nephew" who "spent decades on death row in solitary confinement helping others around him, while working tirelessly to fight his unjust convictions."