He lost his gold medal

Muhammad Ziyad Zolkefli of Malaysia was awarded the gold medal for shot putting at the Paralympics. But, just a few days later, he lost it. He did not misplace it; it was taken from him by the officials. They took it back because he arrived three minutes late for the event. 

Of course, he wouldn't have been awarded the medal unless he actually competed; and he did compete. He was allowed to compete because at the time he had a "logical" reason for being late, the officials said. 

Maybe it was because he was late to the call room before the event began that triggered the officials' decision. He said he was late because he had not heard "the announcement or it was in a language" he did not understand. 

However, a referee later found there was no "justifiable reason" for him to be late. This caused some rivals from other countries to complain. It seems as though this inspired the officials.