Russian officials say five of the country's athletes have been given two-year doping bans for offences at the 2012 Olympic Games and 2013 world championships.
The five include Antonina Krivoshapka, who won silver with the Russian 4x400 relay team at the Olympics, and Yevgenia Kolodko - the 2012 Games shot put silver medallist.
Both had previously been stripped of those medals by the International Olympic Committee.
Krivoshapka's ban means she is likely to be stripped of 4x400m gold and individual 400m bronze medals from the 2013 track and field world championships, while Kolodko could lose a silver medal from the 2013 European indoor titles.
There are also two-year bans for pole vaulter Dmitry Starodubtsev, discus thrower Vera Ganeyeva and hammer thrower Anna Bulgakova.
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