Seoul - A South Korean judge who more than doubled the former first lady's prison sentence last month was found dead on Wednesday, police said.Shin Jong-o was 'found unconscious around 1:00 a.m. ... at the Seoul High Court building,' an investigator at Seocho district police station said.Shin was taken to hospital and pronounced dead, he said, adding: 'There is no sign of foul play in the death.'