Last Updated: 30/04/13 11:42am
Darya Pishchalnikova with her silver medal in London
Russian discus thrower Darya Pishchalnikova, who won silver at the London Olympics, has been given a ten-year doping ban.
The 27-year-old was handed the stringent sentence after testing positive for a second time, having already served a suspension of two years and nine months from July 2008 to April 2011.
A sample taken from Pishchalnikova in May last year was re-tested and proved positive for the anabolic steroid oxandrolone, the Russian athletics federation said on its website.
Pishchalinko won silver at the world championships in Osaka in 2007 but was stripped of the medal after the International Association of Athletics Federations annulled all her results from May that year.
In a separate case, Yelena Arzhakova has been banned for two years and stripped of her European 800 metres title.
The Russian authorities said the 23-year-old showed an "abnormal haemoglobin profile in her biological passport".
DOB: 17/5/1956 Event: Boxing Medals: 1 gold Flag: USA
A week into the Games of the XXX Olympiad, Richard Moore brings us his half-way highs and lows
Linford Christie sprinted to 100m gold for Britain at an Olympic Games best remembered for America's basketball dream team.