Three-times boxing world champion Hector "Macho" Camacho could be left paralysed after he was shot in the face while sitting in a car.Another man died in the attack after at least one gunman opened fire on the vehicle in the city of Bayamon, according to a statement from police.Camacho, 50, was taken to San Juan's Centro Medico trauma centre, where he was in critical but stable condition and expected to survive, said Dr Ernesto Torres.The bullet apparently struck him in the jaw, but exited his head and lodged in his right shoulder, fracturing two vertebrae.Dr Torres said Camacho, who was plagued by drug and alcohol problems during his career, could be paralysed after the shooting.He said: "Camacho's condition is extremely delicate. His physical condition will help him, but we will see."No arrests have been made in the shooting.