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World athletics' governing body 'blocked' doping study

A doping study that allegedly revealed a third of top athletes admitted cheating was blocked by the world athletics' governing body, The Sunday Times has reported.

The newspaper accused the International Association of Athletics Federations (IAAF) of stopping the 2011 study from being published and prevented its authors from speaking about it.

The IAAF denied vetoing the study and dismissed the Times report as "not a new story".

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Athletics body denies 'blocking' doping report

The governing body of world athletics has fiercely denied claims made in The Sunday Times that it blocked the publication of research that showed a third of top athletes had admitted cheating.

ITV News's Peter Smith reports:

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