Allegations that the International Association of Athletics Federations blocked the publication of a study showing widespread doping among athletes at the 2011 World Championships have been denied by the world governing body.
The Sunday Times said the IAAF vetoed a survey showing up to a third of top athletes at the championships in South Korea confessed to using banned performance-enhancing techniques in the previous 12 months.
It is the latest doping allegation to hit the governing body, which has come under attack amid allegations – which it strongly contests – that it is not doing enough to clean up the sport.
“The IAAF has never vetoed publication of this article,” it said in a statement on Sunday.