World and Olympic champion Asbel Kiprop plans to work on his speed after placing fifth at the Melbourne Track Classic in his first 1,500 metres of the year on Friday.
A Nigerian woman weightlifter and an Angolan male swimmer have tested positive for banned substances at the All Africa Games.
The statement added that the suspension bars the athlete from "participating in any competition or activity in athletics prior to a final decision at a hearing conducted under the World Athletics Anti-Doping Rules or the Integrity Code of Conduct".
Ethiopia's Genzebe Dibaba eased through to the finals of the women's 5,000 metres on Thursday to stay on course for a world athletics championships double, while American Brittney Reese saw her six-year long jump reign end.
World champion Asbel Kiprop's relentless pace proved too much for his rivals, including Mo Farah, as the Kenyan clocked the fastest 1,500 metres time since 2004 at the Monaco Diamond League meeting on Friday.
The WADA report also said that between 2004 and Aug. 1, 138 Kenyan athletes had tested positive for prohibited substances, 113 of them during competitions.
Ethiopia's Almaz Ayana put on a brilliant display of front-running to win the women's 5,000 metres at the world championships on Sunday and deprive compatriot Genzebe Dibaba of an unprecedented double gold.
A summary of sports events and persons who made news on Tuesday
Ethiopia's world indoor champion Genzebe Dibaba broke the 22-year-old world women's 1,500 metres record on a sultry night at the Monaco Diamond League meet.
A summary of sports events and persons who made news on Saturday
A summary of sports events and persons who made news on Thursday
Summary of sports events and persons who made news on Wednesday
A round-up of all the results from the 16th World Athletic Championships in London
A summary of sports events and persons who made news on Friday
Olympic champions the United States reclaimed their women's 4x400m relay world title as Jamaica suffered more injury heartbreak in the World Championships final on Sunday.*
Check out the gold medallists on Day 15 of the 2016 Olympic Games in Rio de Janeiro, on Saturday: