Eight South Korean soldiers were killed and two others were seriously injured when a soldier went on a shooting rampage near the tense inter-Korean border, the defense ministry said.
The man, identified as private first class Kim, 22, threw a grenade and fired from his rifle into an army barracks where his colleagues were sleeping in northeastern Yeoncheon early Sunday, the ministry said.
Kim, under investigation after turning himself in, said he went on the shooting spree in a fit of rage because his senior colleagues had bullied him, according to the ministry.
"Eight soldiers were killed and two others were seriously injured in the incident involving a grenade and a rifle at a guard post at 2:30am Sunday," the ministry said in a statement.