British wrestler Chinu Sandhu, who won Commonwealth bronze in 2014, is banned for four years after failing a drugs test.
The IOC strips 10 athletes of medals from the 2008 Olympics after banned substances were found during sample retests.
A popular Gambian wrestler drowned while crossing the Mediterranean trying to reach Europe, his coach says.
The IOC disqualifies nine athletes, including six medallists, for failing drugs tests at the Beijing 2008 Games.
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