Mo Farah celebrates winning the Men's 5000m at the Birmingham Indoor Grand Prix. Photo: Reuters / Matthew Childs

LONDON – Four time Olympic gold medalist Sir Mo Farah appears to be slowly distancing himself from his coach, Alberto Salazar.

A report that he has already decided to split with the American who is at the centre of a doping investigation was denied by his camp.

But a statement then followed that failed to mention Salazar and did little to challenge speculation that the quadruple Olympic champion is looking to split with the man who has masterminded his success.

It said no decision has been made about his coaching set-up once he retires from the track and steps up to the marathon after the World Championships in London in August.

"His total focus is on defending his gold medals in the 5km and 10km this summer," it added.

Salazar has been the subject of doping allegations since 2015 after a report on medical practices at the Nike Oregon Project that counts Farah as its star athlete was published by the BBC and US website ProPublica.

An investigation by the United States Anti-Doping Agency is now reaching its conclusion.

Salazar and Farah have consistently denied any wrongdoing. And while Farah is unlikely to face any charges, he did have an infusion of a legal supplement prior to the 2008 London marathon that a UK Athletics doctor has admitted he did not correctly record.