Mo Farah repeatedly denied to the United States Anti-Doping Agency taking a legal supplement prior to the 2014 London Marathon, before changing his account once he learned the doctor who injected him had told the investigators he had taken it, the BBC reported on Monday.
The four-time Olympic champion had been asked by USADA whether he had been injected with L-carnitine, a naturally occurring amino acid, as part of its investigation into his former coach Alberto Salazar.
The supplement had been obtained through contact of Salazar’s in Switzerland.
As a result of the overall investigation, Salazar has been banned from athletics for four years over doping violations.
Two of Salazar’s violations relate to using a banned method to administer an infusion of L-carnitine.
The US coach, who is appealing against his ban at the Court of Arbitration for Sport, led the Nike Oregon Project training group, where Farah was a star name from 2011-2017.
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