French swimmer Camille Lacourt, who ranked fifth at 100m backstroke final, claimed that the Chinese Sun Yang, who won 200m freestyle, was admitted to competition with positive doping samples, the RMC Sport reported.
Lacourt had his samples taken along with Yang on 8 August. The French suspected the Chinese of taking banned drugs.
'Sun Yang had violet samples. And he was caught at doping two times. How is it possible? I hope the International Swimming Federation and WADA will react to it. Sport turns into insanity,' Lacourt said.
Sun Yang is the first Chinese male swimmer to win an Olympic gold medal, winning medals in freestyle events in London.
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