The Russian delegation at the Pyeongchang Olympics says a bobsledder tested positive for a banned substance called trimetazdine.

Russian Bobsled Federation President Alexander Zubkov told The Associated Press on Friday that a drug-test sample that pilot Nadezhda Sergeeva gave was positive.

The Russian delegation said in a statement that the substance found was trimetazdine, a medication used for angina sufferers. It is listed by the World Anti-Doping Agency as a banned substance affecting the metabolism.

Zubkov says Sergeeva confirms she took no such medication.

Sergeeva’s crew finished 12th in the women’s bobsled competition Wednesday after she had given the sample that later came back positive.

The Russian team was barred from the Pyeongchang Olympics for doping in Sochi, but the International Olympic Committee invited 168 athletes from the country to compete under the Olympic flag.

Meanwhile, the olympic committee said a ceremony has been scheduled to give Norway’s mixed doubles curlers the bronze medal stripped from the Russian team over another incidence of doping.

The IOC said on Twitter that Kristin Skaslien and Magnus Nedregotten’s medals will be presented at the medals plaza Saturday – a rare quick turnaround for such a case.

The tweet included a photo of olympic committee President Thomas Bach welcoming Skaslien and Nedregotten back to Pyeongchang.

Russian curler Alexander Krushelnitsky was stripped of his medal after admitting to a doping violation. He tested positive for the banned substance meldonium after winning bronze in mixed doubles with his wife, Anastasia Bryzgalova.