PYEONGCHANG, South Korea (Reuters) - Russian curler Alexander Krushelnitsky's second sample has tested positive for the banned substance meldonium, the Russian Olympic delegation said in a statement on Tuesday.
Krushelnitsky, who won bronze in Pyeongchang with his wife in mixed doubles curling, had been under investigation over a suspected anti-doping violation.
The delegation said it could not explain how the substance had ended up in Krushelnitsky's body and it was launching an investigation into the case.
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(Reporting by Gabrielle Tétrault-Farber and Moscow bureau; Editing by Mark Bendeich)