A video of Suwon fans beating a middle school fan in Seoul ahead of a professional soccer rivalry match and super match last Sunday has sparked controversy.
The police have launched an investigation.
It is around Suwon World Cup Stadium before the match.
A Suwon fan picks up a Seoul fan and throws it on the floor.
While the Seoul fan, who was identified as a middle school student, took off the uniform, Suwon fans created a threatening atmosphere around them. As the video spread and the controversy spread, the police started an investigation after a report from the victim's family who recognized the seriousness.
The professional football federation also decided to review follow-up measures by receiving reports from both clubs.