Two Kenyan runners test positive at world championships - IAAF

Aug 26 (Reuters) - Kenyan athletes Koki Manunga and Joyce Zakary have been handed provisional bans after testing positive for the use of banned substances at the world championships, the International Association of Athletics Federations said on Wednesday. The 400 metres runners were targeted in pre-competition tests at their team hotel on August 20 and 21, the IAAF said in a statement. (Reporting by Nick Mulvenney; Editing by John O'Brien)