Sir Mo Farah’s former coach Alberto Salazar has been banned from athletics for four years for multiple anti-doping violations.
Salazar runs the Nike Oregon Project, which was home to four-time Sir Mo from 2011 to 2017.
The 61-year-old’s ban comes after a four-year investigation by the US Anti Doping Agency (USADA) and a two-year court battle.
Salazar was sanctioned along with endocrinologist Jeffrey Brown for “orchestrating and facilitating prohibited doping conduct” while working with the Nike Oregon Project, USADA said.
Salazar’s violations included “administration of a prohibited method”, tampering or attempted tampering with athletes’ doping control processes and trafficking or attempted trafficking of testosterone.
Sir Mo announced he was leaving Salazar in October 2017 but said his decision had to do with the doping claims.
USADA chief executive officer Travis T Tygart said following today’s announcement: “The athletes in these cases found the courage to speak out and ultimately exposed the truth.
“While acting in connection with the Nike Oregon Project, Mr Salazar and Dr Brown demonstrated that winning was more important than the health and wellbeing of the athletes they were sworn to protect.”
Brown was found to have tampered with records, administered an “over-limit” infusion and to have been complicit in Salazar’s trafficking of testosterone.
Salazar moved into coaching after a successful distance running career in which he thrice won the New York Marathon and claimed victory once in the Boston Marathon in the early 1980s.
According to the BBC, UK Athletics conducted its own review into the claims around Salazar, and gave Briton Sir Mo the green light to continue working with the American.
Sir Mo won won Olympic gold in the 5,000 and 10,000 metres at the Games in London in 2012 and Rio de Janeiro in 2016.
He also won several world titles on the track before switching to marathon running. He won the 2018 Chicago Marathon in a time of 2:05:11, a European record.