The 23-year-old midfielder displayed a sign referring to a territorial dispute between South Korea and Japan while celebrating a 2-0 win over their fierce rivals in the bronze medal match.
FIFA has slapped a two-match ban and a $3,800 fine on the player who was banned from the Olympic medal ceremony and had his medal withheld as well.
"The EB (executive board) decided to set up a Disciplinary Commission to look into the matter, based on the recent decision by FIFA to ban the player from international competition for two games," the IOC said in a statement after wrapping up the final meeting of its Executive Board in Lausanne on Wednesday.
