( CNN ) -- Olympic and world 100 meters champion Shelly-Ann Fraser has been suspended after testing positive for the recreational drug oxycodone . Bruce James , the president of MVP track and field club in Jamaica , broke the news on Twitter , the UK 's Press Association reported . The 23-year-old was due to run in Lausanne on Thursday night , but withdrew for the start of her event . The cause of her problems date back to a previous Diamond League meeting in Shanghai on May 23 where she tested positive after apparently taking medication for a toothache . `` We are withdrawing her from all competitions until we are able to have a hearing to determine what sanction will apply , or if she will be exonerated . `` Coach ( Stephen ) Francis is not upset with Shelly-Ann at all . He is actually proud of her for being brave enough to race in Shanghai . `` The IAAF have advised us that the offending substance is oxycodone . Google it . It is not a performance-enhancing drug . '' Six Jamaican athletes have tested positive for banned substances over the last year , with all but one resulting in light bans . A defiant Fraser told Reuters.com Friday that she would be proved innocent . `` I have nothing to hide , '' she said . `` I will go home and have a hearing before my federation in Jamaica . `` I hope they will accept my explanation . '' The sprinter shot to fame when she won gold at the 2008 Beijing Olympics , racing to an impressive 10.78 seconds in the final . She doubled up as world champion in Berlin the following year . Men 's sprint star Asafa Powell , who is a member of the same MVP club and is also coached by Francis , claimed it was `` not a big deal '' as he spoke to reporters ahead of a track meet in Gateshead , England on Friday . `` So I have n't heard much , I do n't know what exactly it is . I have heard it is not a big deal . He added : `` Everyone has to be careful in this sport , no matter who you are . Any little thing can turn out to be a big thing . ''
Olympic champion Fraser has tested positive for the painkilling drug oxycodone . The 23-year-old was named in Australia's squad to compete at London 2012 but failed a drugs test before he left Australia on his way to London. Jamaican compatriot Asafa Powell claims it is `` no big deal '' Fraser will have her case heard by her Jamaican federation .