Russian cyclist Ekaterina Gnidenko has been provisionally suspended by the International Cycling Union (UCI) following re-analysis of doping samples from the 2012 Olympic Games in London.
The 23-year-old is one of eight Russian competitors from those Games to have tested positive for banned drugs following the International Olympic Committee’s (IOC) decision to re-examine drugs tests.
Gnidenko was found to have tested positive for Anabolic Androgenic Steroids on July 24, three days before the Opening Ceremony of London 2012.
The Russian was eliminated in the second round of the women’s keirin on August 3, before failing to advance from the first round of the women’s individual sprint competition two days later.
She claimed a silver medal in the women's keirin at the European Track Cycling Championships in Panevėžys in Lithuania in October 2012.
If Gnidenko's positive test from London 2012 is confirmed, then she is set to lose that medal, which could lead to team-mate Elena Brezhniva being promoted to silver and Belarus' Olga Panarina to bronze.
Her positive test was confirmed by the UCI, who revealed that it was the only case passed on by the IOC as part of the retesting of samples from the Beijing 2008 and London 2012 Games.
A total of 23 athletes from London 2012 and 32 from Beijing 2008 have been revealed by the IOC to have failed tests.
Gnidenko becomes the latest Russian athlete to be identified, with the Russian Olympic Committee (ROC) having already confirmed that eight of the country's athletes had registered positive in the retests from London 2012.
Hammer throw gold medallist Tatyana Beloborodova and shot put silver medallist Yevgeniya Kolodko were named by Russia's public sports channel Match TV on Tuesday (May 31).
A total of 14 Russians in athletics, weightlifting and rowing and one Spanish athlete have already been named as testing positive after the re-analysis of samples from Beijing 2018.
The situation is due to be discussed at the second day of a meeting of the IOC's ruling Executive Board in Lausanne today.
Full details are expected within the next few days following re-testing of all B-samples.
The IOC revealed yesterday that it is extending its re-testing programme of doping samples submitted at Beijing 2008 and London 2012 to include all medal winners.
This expands on the targeted re-analysis of athletes due to compete at Rio 2016 completed last month.