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Russian hackers leak Rio athletes' files Russian hackers leak Simone Biles and Serena Williams files
(35 minutes later)
World anti-doping agency condemns Russian hackers for leaking confidential medical files of US Olympic athletes The World Anti-Doping Agency (Wada) has condemned Russian hackers for leaking confidential medical files of US Olympic athletes.
This breaking news story is being updated and more details will be published shortly. Please refresh the page for the fullest version. Athletes affected include tennis players Venus and Serena Williams and gymnast Simone Biles.
If you want to receive Breaking News alerts via email, or on a smartphone or tablet via the BBC News App then details on how to do so are available on this help page. You can also follow @BBCBreaking on Twitter to get the latest alerts. A group calling itself "Fancy Bears" claimed responsibility for the hack of a Wada database.
Wada said in a statement that the cyber attacks were an attempt to undermine the global anti-doping system.
Russia's track and field team were banned from the Rio Olympics over an alleged state-backed doping programme.
"Let it be known that these criminal acts are greatly compromising the effort by the global anti-doping community to re-establish trust in Russia," Wada director-general Olivier Niggli said.