President Moon Jae-in has expressed sympathy... to the family members of the South Korean government worker killed by North Korean troops at sea late last month. The Blue House said Tuesday that the president has offered his condolences but asked for the family's patience... until the final results of the investigation are released. The brother of the deceased meanwhile has called for an investigation by the United Nations... criticizing the probe led by the police. He raised doubts on their intermediate findings which suggested that the official had tried to defect.