Former Olympic and triple world 1,500 metres champion Asbel Kiprop of Kenya said on Wednesday he would "prove he was clean" following British media reports that he had tested positive for the banned blood-boosting drug EPO.
The 28-year-old, world champion in 2011, 2013 and 2015 and promoted to Olympic gold in 2008 after Bahrain's Rashid Ramzi tested positive for doping, was reported by Britain's Press Association to have failed an out-of-competition test.