The organization that is leading the anti-doping efforts at the Beijing Olympics has confirmed that 15-year-old Russian figure skater Kamila Valieva tested positive for a banned substance. The International Testing Agency, in a statement Friday, also revealed that Russian anti-doping officials had cleared Valieva to compete in the women’s figure skating event, despite initially issuing a provisional suspension.

The ITA said it was not clear why Russian officials reversed the provisional ban on Valieva. However, the anti-doping watchdog said it was filing an emergency appeal with the Court of Arbitration for Sport. The Olympic women’s single skating event is set to begin on Tuesday.

The ITA’s announcement provides the first official accounting of a fast-mov…