Mo Farah was quizzed by United States Anti-Doping Agency (USADA) lawyer Bill Bock yesterday (25 July) in a pre-organised meeting in London, The Mirror reports.
The double Olympic gold medalist was supposedly questioned for five hours at the Grange Tower Bridge Hotel, although it must be stressed that there is nothing to suggest that he is under investigation or any suspicion of wrongdoing.
"It went alright… It's all good. And I'm good, good, good," he was quoted as saying after leaving the meeting.
Such an exchange came the day after Farah eased to victory in the 3,000m race at the Sainsbury's Anniversary Games.
He had pulled out of the Diamond League meeting in Birmingham last month citing emotional and physical tiredness in the aftermath of allegations of anti-doping violations made against his coach Alberto Salazar and US record holder Galen Rupp, which they both deny, but showed no signs of fatigue on his return to action on British soil at the Olympic Stadium.
Farah's time of 7:34.66, the fastest in the world so far this year, was enough to beat Othmane El Goumri and Kenya's Wilson Kipsang and leaves him in excellent shape for the World Championships which begin in Beijing on 22 August.
"I'm confident, but you never know," he told The Guardian of his chances at achieving another impressive double.
"The Kenyans and the Ethiopians always have someone coming through, so in terms of the depth it's really strong. I shouldn't take it for granted but at the same time there's no pressure. I should go out there and hopefully try and win the 10,000m for sure.
"And then the 5,000m is going to be a little bit tougher, to be honest with you. You never know, anything can happen. Like four years ago, in Daegu in 2011, it was Ibrahim Jeilan who came from nowhere to beat me."