Story highlights IOC is leaving athletes' eligibility up to sporting federations

A WADA report accused Russia of state-sponsored doping

(CNN) The governing body of world aquatics has banned seven Russian swimmers from the Rio Olympics because of doping violations, the group said Monday.

The Federation Internationale de Natation (FINA), however, ruled the Russian synchronized swimming team, divers and the women's water polo team are still eligible to participate because they have not been implicated in the ongoing doping scandal.

The International Olympic Committee left the decision on competitors' eligibility up to their respective sporting federations, the IOC said in a statement Sunday.

Last week,a damning report alleged a complex system of subterfuge furthered doping among Russian athletes. Russia's security services tampered with sealed urine samples, said the World Anti Doping Agency (WADA).