Russian teenage figure skater Kamila Valieva failed a drug test taken in December before the Beijing 2022 Winter Olympics, the International Testing Agency (ITA) confirmed Friday.

Fifteen-year-old Valieva, a breakout star of the Games who helped the Russian Olympic Committee (ROC) take home gold in Monday's figure skating team event, was allowed to compete despite testing positive for the banned heart drug trimetazidine, which is commonly used to treat people with angina, the ITA said in a statement.

The failed test only came to light during the Winter Olympics, and it remains unclear if the drug test controversy will see the medal revoked.