The World Anti-Doping Agency has referred the case of teenage figure skater Kamila Valieva to the Court of Arbitration for Sport.
It follows the Russian Anti-Doping Agency (Rusada) having found Valieva bore “no fault or negligence” for a positive doping test.
Wada said the decision was “wrong under the terms of the World Anti-Doping Code”.
It is seeking a four-year ban for the 16-year-old.
Valieva, then 15, failed a drugs test in December 2021 when she tested positive for banned heart medication trimetazidine.
Details of the result only surfaced after she had won gold in the team event at the Beijing Games in February 2022 – during which she became the first woman to land a quadruple jump at a Winter Olympics.
She was allowed to compete in the women’s singles event after a court lifted her provisional ban.
However, a number of falls and stumbles meant she dropped from first to fourth place, which saw her leave the arena in tears.
More to follow.