NAIROBI — Three Kenyan athletes have been suspended after testing positive for banned substances, Athletics Kenya (AK) Secretary General David Okeyo told reporters Friday. Marathon runners Wilson Erupe Loyanae and Nixon Kiplagat Cherutich will serve two-year bans, while Moses Kiptoo Kurgat was suspended for a year. A fourth athlete, Francis Kibiwott, who finished 45th at the 2007 world half marathon championship in Italy, was cleared after his case was reviewed by the medical commission of world athletics governing body the IAAF. The east African nation has been on the defensive following reports of widespread doping among its elite athletes. — Reuters