Alberto Salazar: WADA should probe athletes who worked with former coach, IOC's Thomas Bach says

Mo Farah was coached by Alberto Salazar between 2011 and 2017 - Farah is not accused of any wrongdoing and has never failed a drugs test

All athletes who have trained with Alberto Salazar – banned former coach of Sir Mo Farah – should be investigated by the World Anti-Doping Agency (WADA), says International Olympic Committee president Thomas Bach.

Salazar was found guilty of doping violations earlier this week and banned for four years after a four-year investigation by the US Anti-Doping Agency (USADA).

USADA said Salazar was punished for "orchestrating and facilitating prohibited doping conduct" as head coach of the Nike Oregon Project, a camp designed primarily to develop US endurance athletes.

• Farah speaks out as ex-coach gets doping ban
• Coe: Salazar athletes not tarnished by link
• 'Salazar tried to avoid exposure of the truth'

But USADA did not sanction any athletes who might have been the recipients of this prohibited doping conduct, even inadvertently, and Bach said the affair "raised serious concerns".

"We will follow up on questions that remain open," IOC president Thomas Bach said on Thursday. "The IOC will write a letter to WADA in this respect."

Bach added: "First of all to see how many athletes have been investigated. Have all the athletes been investigated who were training in this centre there?

"Does the report address the whole period of the existence of this project or only part of it? Could there be any Olympic results affected directly or indirectly?"

Please use Chrome browser for a more accessible video player

WADA president Sir Craig Reedie has welcomed USADA's decision to hand a four-year ban to Alberto Salazar for multiple anti-doping violations

Salazar has denied any wrongdoing and vowed to appeal against the ban. Dr Jeffrey Brown, a Nike-paid endocrinologist who treated many of Salazar's athletes, was also banned for four years.

Farah, who has never failed a drugs test and has always strongly denied breaking any rules, split with Salazar in 2017 and said he had no tolerance for anyone who broke the rules in a statement on Tuesday.

The double Olympic champion at both 5,000 and 10,000m said at the time of his decision to part ways with Salazar that the doping investigation was not behind his decision.

Nike, which sponsors many high-profile runners, is standing by Salazar.

Former 1500m world champion Jenny Simpson said the 61-year-old should have been banned for longer.