 He died of a heart attack in a room at Chicago's Strode Hotel; a heroin overdose was suspected in his death.In his autobiography, "Miles", Davis stated his belief that Webster was the unwitting victim of a murder attempt on saxophonist Sonny Stitt.According to Davis, Stitt, who was at that time addicted to heroin, had physically assaulted various people in order to get money to support his habit.