Libardo Niño of Colombia has tested positive for EPO (Erythropoietin) following his silver medal in the Pan American Games time trial.
He has pronounced his innocence. "I'm absolutely sure that I did not consume any banned substances, much less before the Pan American Games," the 38 year-old told Caracol Radio on Saturday, according to the AP. He said that he was willing to undergo another blood test.
Niño is currently ninth overall in the Tour of Colombia, a race he won in 2003 and 2005.
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