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'Others need to do more' says London Marathon chief

The London Marathon chief executive says his organisation is doing "more than anyone else" to ensure athletes are not doping.

Nick Bitel was speaking to ITV News about allegations made by the Sunday Times about drug test data from 2001 to 2012.

We're at the forefront of the battle against doping in our sport, the first people to call for blood tests and the only ones to blood test every single elite athlete.

We've done our part. What this shows is that others need to do more. This has to be a concerted effort but we're not the disciplining authorities.

What people need to know is that when an athlete comes to the London Marathon we are doing more than anybody else to make sure that athlete is clean and we will continue to do so and if there's more to be done then we will do more.

– Nick Bitel

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London Marathon chief concerned by doping claims

London Marathon chief executive Nick Bitel has said race organisers are "very concerned" by allegations in the Sunday Times that seven winners in a 12-year period recorded suspicious blood scores.

The newspaper has published fresh allegations following its analysis of drugs test data from 2001 to 2012.

It said the winners of 34 major marathons around the world - one in four - during the period should have faced censure or investigation because of their test results, with those athletes collecting more than £3million in prize money.

We believe there are people in our sport who are cheating and everyone has a part to play to protect those who are not.

We continue to be at the forefront of anti-doping measures for marathon runners as we are determined to make marathon running a safe haven from doping but we cannot do it all on our own and rely heavily on the IAAF.

We are therefore very concerned by the allegations made in the Sunday Times today and we will be discussing the implications of the allegations with the IAAF.

– Nick Bitel

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World athletics head brands doping claims 'laughable'

Head of the IAAF Lamine Diack. Credit: PA

The head of world athletics has said any suggestion his organisation had been negligent in drug testing was "laughable".

Lamine Diack, President of the International Association of Athletics Federation, told Reuters there was "no evidence" anything of the sort had taken place.

"There are allegations made. We want to look into them seriously because to say that in athletics between 2001 and 2012 we did not do a serious job with tests is laughable," he said.

The Sunday Times (£) reported obtaining secret data from the IAAF suggesting more than a third of medals had been won by athletes with "suspicious" blood test results.

Sports minister calls for unity to prevent doping

Sports Minister Tracey Crouch said they were 'serious allegations' Credit: PA

Sports Minister Tracey Crouch said "everyone involved in sport must work together" following fresh claims of doping by Olympic athletes.

These are serious allegations and it is right they are being referred by the World Anti-Doping Agency (WADA) to its Independent Commission for investigation. I know UK Anti-Doping (UKAD), one of the best anti-doping agencies in the world, is also supporting this action, and has made it clear it will assist with WADA's enquiries.

UKAD has worked tirelessly to ensure athletes and sport are clean. But everyone involved in sport must work together to ensure we maintain the spirit of sport and prevent doping.

– Tracey Crouch
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