Greece's 2004 Athens Olympic 20km walk champion Athanasia Tsoumeleka has tested positive for the bloodbooster erythropoietin (EPO), the state broadcaster Net reported on Saturday. The broadcaster said she had tested positive on August 6 last year, just two days before the opening ceremony for the Beijing Games.
In a statement, the 27-year-old Tsoumeleka, who finished ninth in last year's Beijing Games, denied taking the drug but said she had decided to retire from the sport.
"I will not get involved in the process of defending myself, even though I have never knowingly used this substance, because in order to take part in races I have to accept that I am totally responsible for anything that is found in my sample," she said.
"The fact that the same samples are analysed more than once (in other words, they are opened and closed when I am not present)... makes me have some unpleasant feelings about the whole process. "I am really not interested whether in six months time they tell me that the sample is actually negative, like it was the first time.
"I am very unhappy about the situation with doping uses world-wide. I do not want to take part in competition like this anymore." Last year Greek 400 metres hurdler Fani Halkia, who also won gold at the Athens Games, was banned for two years after testing positive for the steroid methyltrienolone. Male sprinter Tassos Gousis was also suspended for two years after a positive test for the same steroid.