UK Athletics chairman Ed Warner has advised Mo Farah to suspend his relationship with coach Alberto Salazar after the American was accused of breaching anti-doping rules.
A recent BBC documentary claimed that Salazar had been involved in doping American long-distance runner Galen Rupp. Salazar has denied the allegations.
Farah withdrew from Sunday's Birmingham Grand Prix 24 hours after announcing that he would be standing by his coach unless evidence confirmed that he had been involved in any wrongdoing. The Brit has been working with Salazar since 2011.
UK Athletics chief Warner has now suggested that Farah should distance himself from Salazar for the immediate future.
"If I was a personal friend of Mo's, not the British Athletics chairman, and he was just coming to me for advice, I think I'd have said to him, 'do you know what, the best thing to do is to suspend the relationship for now'," he told BBC Sport.
"Compete on the European circuit this summer, go to the World Championship in Beijing, let the allegations against Alberto be washed through by the United States Anti-Doping Agency and see where it leads'.
"However, I completely respect the fact Mo has great loyalty to his coach. And, as the British Athletics chairman, you absolutely can't make a knee-jerk reaction like that because Salazar is innocent until proven guilty.
"We need to conduct our own thorough investigation of everything that's gone on with British Athletics and around Mo Farah in our engagement with Alberto and let's see where that goes."
UK Athletics released a statement on Saturday insisting that they have "absolutely no concerns" over Salazar, who works as a consultant for the organisation.
