Dick Pound, the chair of the World Anti-Doping Agency commission into allegations of doping, has said he does not believe IAAF president Lord Coe was lied when he denied being aware of the scandal in which Russian athletes have been embroiled.
Lord Coe, previously served as vice-president at the world athletics' governing body between 2007 and 2015, before becoming president.
When asked his thoughts by a reporter at a press conference in Munich, Dick Pound said: "I do not believe so".
He added: "If you're asking me to give an opinion if he lied or not, I'd say he didn't lie."
Senior staff at athletics' governing body must have known about doping taking place within the sport, an independent report has found.
A report is expected to reveal there is no way members of world athletics' governing body could have been unaware of the extent of doping.
Sebastian Coe has said he wished he did more to stamp out doping while a vice-president of athletics' governing body.