Russian doping: Inside Moscow's discredited drug-testing lab - Dan Roan
BBC Sports Editor Dan Roan is granted rare behind-the-scenes access to the discredited Moscow laboratory, where 1,400 samples were allegedly destroyed to cover up doping.
He speaks to Russian Sports Minister Vitaly Mutko on the day the country's Olympic committee reveals 14 of its athletes have tested positive for doping after re-tests of their samples from the 2008 Beijing Games.
In a statement, the Russian Olympic Committee said it had received the information in "official documents" from the International Olympic Committee (IOC).
The IOC earlier said up to 31 athletes could be banned from August's Rio Games.