The world's top anti-doping authority will investigate the entourage of Russian figure skater Kamila Valieva who tested positive for a banned drug

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Valieva, whose Olympic future will be decided after a Court of Arbitration for Sport (CAS) hearing at 8:30 p.m. Beijing time (1230 GMT)

effortlessly completed a clean run through of her short programme in practice on Sunday.

The World Anti-Doping Agency (WADA) said in a statement to Reuters on Sunday that it would ask its independent Intelligence

and Investigations Department to investigate the coaches, doctors and other adults surrounding the athlete.

Earlier, the International Olympic Committee (IOC) said it had formally asked WADA to launch an investigation.

Her future at the Games and a gold for the Olympic Committee now hang in the balance amid a global otigate the entourage of Russian figure skater Kamila Valieva

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