Agent: Powell tested positive for 'stimulant'

The agent for the former 100m world record holder Asafa Powell has confirmed that the athlete has tested positive for a 'stimulant' during a recent drugs test.

It is not clear if the athlete will now withdraw from future international competitions.

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Athletes 'given supplements'

Paul Boyle, manager of Asafa Powell and Sherone Simpson, has told ITV News the athletes were given 'supplements' by their physiotherapist. He says if any of the supplements were not legal, they had been supplied unwittingly.