Rio 2016 Olympics - The Russian shot putter Evgeniia Kolodko has been officially stripped of her silver medal from the London 2012 Olympics, after testing positive for banned substances in a re-test.
Kolodko had been promoted to silver after the Belarussian Nadezhda Ostapchuk was disqualified and stripped of her gold medal after a positive doping test at the time.
New Zealand's Valerie Adams was awarded the gold, with China's Gong Lijiao getting the bronze.
But the International Olympic Committee said the Russian will now be stripped of her medal.
"Reanalysis of Kolodko's samples from London 2012 resulted in a positive test for the prohibited substances dehydrochlormethyltestosterone (turinabol) and ipamorelin," the IOC said.
"The (International Association of Athletics Federations) IAAF is requested to modify the results of the above-mentioned event accordingly."
Russia this week lost two more medals from the Beijing 2008 Games in the women's 4x400 and 4x100 metre relays after further positive tests in the re-examination of samples conducted by the IOC.
The IOC stores samples for a decade to test with newer methods or for new substances.
Russia's track and field team, with the exception of one athlete based in the United States, were banned from the Rio Olympics over what the World Anti-Doping Agency (WADA) said was a state-backed doping programme.