Montreal: The World Anti-Doping Agency added its voice Sunday to those criticising the International Olympic Committee's failure to ban Russia from the Rio Olympics in the wake of doping revelations.

The Montreal-based agency issued a statement saying it would work to "ensure the best possible outcome for clean athletes" in Rio, but regretted that the IOC ignored its call for a ban of Russia after the WADA-commissioned McLaren Report found evidence of a government-backed doping system in a range of sports.