|South Korean soldiers mourn over the victims of a shooting spree at a military hospital in Yangju|
The 22-year-old private, identified by his surname "Kim," threw a grenade into a barracks of sleeping soldiers in Yeoncheon county near the border with North Korea, then opened fire with a rifle.
The Yonhap news agency says two wounded soldiers were airlifted to a hospital with injuries that are not life-threatening. Private Kim told authorities he was angry because a senior soldier had verbally abused him.
In a televised statement, Defense Minister Yoon Kwang-ung issued an apology, vowing that the armed forces would take necessary steps to prevent any such incidents in the future.
Some information for this report provided by AP and Reuters.