Ham received a flurry of punches from his opponent toward the end of the 56-kilogram contest and collapsed after speaking to reporters following the bout here Saturday.

He was treated for about 10 minutes by team medical staff.

“After being given oxygen, he was taken to the medical room here. There does not seem to be any complication, but he will be kept under observation for some time,” said an organizing committee official who asked not to be named because he was not authorized to speak to the media.