SEOUL, South Korea (AP) – South Korea says it will request North Korea to further investigate the killing of a South Korean government official who was shot by North Korean troops after being found adrift near the rivals’ disputed sea boundary while apparently trying to defect. Seoul could also possibly call for a joint investigation into Tuesday’s shooting, which sparked outrage in the South and drew a rare apology from North Korean leader Kim Jong Un. Kim was quoted as saying he was “very sorry” over what he described as an “unexpected, unfortunate incident.” However, North Korea largely passed the blame for the shooting to the South Korean official, claiming that he refused to answer questions and attempted to flee before North Korean troops fired at him.