SEJONG CITY, South Korea - Three people were killed Wednesday after a man fired a shotgun at them in Sejong City, according to police.
A few hours after the incident, the assailant was found dead with a self-inflicted gunshot wound in his head.
The shooting took place at around 8:10 a.m. The 50-year-old gunman, identified by his surname Kang, opened fire at a 50-year-old man who was about to get in his car to go to work.
The victim is the elder brother of Kang's ex-girlfriend surnamed Kim.
Kang also shot Kim's 74-year-old father residing near her brother's house.
He then moved to a nearby convenience store operated by her current boyfriend, surnamed Song. After shooting him, Kang spread thinner inside the store and set it on fire.
All the three victims were immediately transported to a nearby hospital, but died.
After the shootings, Kang ran away. But some two hours later, police found him dead near Geumgang River.
Police presume he shot himself with one of the two 18.5 mm-caliber shotguns that he collected from a police station in Gongju, South Chungcheong Province earlier in the day. The other gun was found in his car.
It is illegal to own guns in Korea. However, Kang gained state authorisation to use guns for hunting and left them in the police storage box in compliance with state rules.
Kang and his ex-girlfriend were in a common-law marriage before they broke up one and a half years ago. After the breakup, Kim was living with the deceased owner of the convenience store.
Investigators believe that Kang's shooting rampage was promoted by a conflict over his investment in Song's convenience store.
They also assume that Kang premeditated the shootings as he collected his guns from the police station in time for his killing rampage.
To find out what drove Kang to kill the three, police plan to collect accounts from witnesses and others, and question his former girlfriend.
Police have also asked the state forensic service to conduct autopsies on the three victims.