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Olympic Athletes from Russia drugs probe launched
An anti-doping case has been opened against Russian medal-winning curler Alexander Krushelnitsky, the Court of Arbitration for Sport has confirmed.
Krushelnitsky, who won an Winter Olympics bronze medal alongside his wife Anastasia Bryzgalova in the mixed doubles, is suspected of testing positive for meldonium - the banned substance that was taken by shamed grand slam tennis champion Maria Sharapova.
CAS opened a case against the 25-year-old following a request from the International Olympic Committee, with a date for a hearing still to be set.
There are 168 competitors in the OAR team as Russia was banned from the Games over "systemic" doping at the last games in 2014 in Sochi.
Russian athletes have, however, been allowed to compete under the OAR banner, as long as they can prove that they are drugs-free.
The OAR team is the third biggest at the games, behind Canada and the United States.