EXECUTED: Warren Lee Hill has been put to death despite his lawyers claiming he was "intellectually disabled" [IG/GETTY]
Warren Lee Hill, 54, was killed by lethal injection at a Georgia prison.
Hill, who was jailed in 1986 for killing his 18-year-old girlfriend, did not make a final statement and refused a special last meal.
His lawyer has slammed the death as a "moral stain" on the US justice system.
Brian Kammer said: "Today, the Court has unconscionably allowed a grotesque miscarriage of justice to occur in Georgia.
"Georgia has been allowed to execute an unquestionably intellectually disabled man, Warren Hill, in direct contravention of the Court's clear precedent prohibiting such cruelty
Source:UK Daily Star