More than 1000 Russian athletes 'involved in state-sponsored' doping

More than 1,000 Russian athletes in 30 Olympic and Paralympic sports benefited from a state-sponsored doping cover-up between 2011 and 2015, an investigation funded by the World Anti-Doping Agency has found.

The conspiracy involves dozens of medallists from the London 2012 Olympics, the 2013 World Athletics Championships in Moscow and the Sochi Winter Olympics in 2014.