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".
Usain Bolt ran under 10 seconds for the first time this year as he narrowly won the 100 metres at the Monaco Diamond League meeting on Friday.
World champion Muktar Edris, who beat Farah at the World Championships in London two weeks ago, was among the trio left sprawled on the track in the Briton's wake as Farah dived over the line.
World champion Dafne Schippers was involved in a bizarre women's 200 metres at the Oslo Diamond League meeting on Thursday when the Dutchwoman false-started, was allowed to race and won, was then disqualified and finally reinstated.
A round-up of all the results from the 16th World Athletic Championships in London
The 20-year-old Indian, who was competing in the season's Diamond League Series Finale just three days after winning Asian Games gold in Jakarta, sent the spear to a best distance of 85.73m to end at fourth position in the eight-man event.
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.
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.*
Summary of sports events and persons who made news on Wednesday
A summary of sports events and persons who made news on Monday
A round-up of results from the final day of the World Athletics Championships in Doha on Sunday
