Usain Bolt could lose gold medal after team mate reported to have failed Olympics drug test
Usain Bolt could lose one of his six Olympic gold medals after a Jamaica relay team-mate was reported to have retrospectively failed a drugs test taken at the Beijing Olympics.
Jamaican sprinter Nesta Carter has been named by the Jamaica Gleaner newspaper as one of the athletes whose re-examined samples from the 2008 Games showed an adverse result.
The newspaper reported on its website that the 30-year-old, an Olympic gold medallist in the 4x100 metres relay at Beijing and in London 2012, returned a positive test for the banned stimulant methylhexanamine when his 'A' sample was re-tested.
The International Olympic Committee (IOC) re-tested 454 samples from the Beijing Games, with 31 A samples testing positive.
Any possible sanctions will depend on the results of the re-testing of 'B' samples, which are awaited.
The IOC and the International Association of Athletics Federations (IAAF) both declined to comment on the reports surrounding Carter when contacted.
Carter's agent and the Jamaican Olympic Association have also yet to comment.
Carter also won relay gold at the 2011, 2013 and 2015 World Championships, all alongside Bolt.
Should Carter lose his Beijing Olympics gold, then it would almost certainly mean all of his relay team-mates, including Bolt, also forfeiting their medals from the event.
Carter's personal best over 100m of 9.78 seconds ranks him as the sixth fastest man in history.
He also won bronze in the individual event at the 2013 World Championships.
The World Anti-Doping Agency (WADA) website lists methylhexanamine as a specified stimulant which is banned in competition. WADA says it has been considered a stimulant since 2004 and was reclassified in 2011 to become a 'specified substance'. It defines a specified substance as one which is more likely to be "susceptible to a credible non-doping explanation" and therefore can come with a reduced sanction.