A Taiwanese taekwondo competitor at the Asian Games has been disqualified after extra electronic sensors were found in her socks.
The sensors detect when competitors score points by landing kicks and punches on their opponent's body.
Additional sensors could make point-scoring easier.
Yang Shu-chun had been one of the favourites for the gold medal and says she is innocent. A Taiwan official said her disqualification was "unfair".
Taiwan's top sports body immediately voiced its concern over the ruling.
"The technical committee did not allow Taiwan's team a chance to explain before making the decision and we regret the unfair ruling," said the Sports Affairs Council.
The use of such sensors in the fighters' socks was introduced to make judging more transparent.
BBC News
