China’s gold medal gymnasts were old enough to compete in the Beijing Olympics, the sport’s governing body said Wednesday, though it still had questions about the team that competed at the 2000 Sydney Games.

Two members of that squad—Dong Fangxiao and Yang Yun—remain under scrutiny.

The International Gymnastics Federation said in a statement that it “does not consider the explanations and evidence provided to date in regards to these athletes as satisfactory.”

Dong got a Beijing Olympics credential with documents that suggest she was only 14 in 2000, said An...

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