History of rampages
Shooting rampages against fellow soldiers happen occasionally in South Korea.
In 2011, a 19-year-old marine corporal went on a rampage at a base on Gwanghwa Island. Investigators later said that the corporal was angry about being shunned and slighted and showed signs of mental illness.
In 2005, a soldier tossed a grenade and opened fire at a front-line army unit, killing eight comrades. Private Kim Dong-min told investigators he was enraged at superiors who verbally abused him.
All able-bodied men must do two years' military service. According to a Korea Times editorial on Monday, the military occasionally sends soldiers to the border despite a history of mental troubles.
AP
(China Daily 06/24/2014 page11)