Jamaican sprinter Asafa Powell fails drug test
Jamaican sprinter Asafa Powell has failed a drugs test, his management company has confirmed.
Powell's agent Paul Doyle confirmed in an email that the former 100 metres world record holder had tested positive for a banned substance.
Powell, 30, has won gold medals in the 4x100m relay at the Olympics and World Championships and held the world record before his compatriot Usain Bolt.
Powell tested positive for a stimulant at last month's national championships.
"We are working with WADA (World Anti-Doping Agency) now on how it got in his system," Paul Doyle said.
His Jamaican teammate Sherone Simpson also tested positive for a stimulant.
Simpson won Olympic gold in the women's 400 relay in 2004 and silver in 2012, along with an individual silver in the 100 in 2008.
These doping positives come a month after another Jamaican Olympic champion, Veronica Campbell-Brown, tested positive for a banned diuretic.
The shocking revelations come on the same day that American sprinter Tyson Gay announced that he too had tested positive for a banned substance.