OTTAWA, July 18. /TASS/. The World Anti-Doping Agency (WADA) calls on the international sports society to ban Russian athletes from taking part in all international athletic competitions, including the 2016 Summer Olympic Games in Brazil next month.

WADA Independent Commission delivered earlier in the day a report of its investigation into widespread doping abuse and sample swapping by Russian athletes, with the support of state, sports officials and FSB, during the 2014 Winter Olympic Games in Sochi.

"WADA calls on Sport Movement to deny Russian athletes participation at international competitions including Rio until ‘culture change’ achieved," Ben Nichols, a spokesman for WADA, wrote in his Twitter account after the investigation’s finding were made public in the commission’s report.

The report was presented by Richard McLaren, a Canadian law professor, who chaired the WADA Independent Commission.

"McLaren investigation into doping in Russia reveals most deliberate and disturbing abuse of power ever seen in sport," Nichols wrote. "Doping scheme across 30 sports mean there can no longer be presumption of innocence."

The WADA Independent Commission launched its investigation following media reports earlier in the year which were based on a testimony from former head of Moscow anti-doping laboratory Grigory Rodchenkov.

Two months ago Rodchenkov told Western media that Russian athletes largely used performance enhancing drugs at the 2014 Olympics in Sochi with the approval from the national sports authorities.

In an interview with New York Times, published in mid-May, Rodchenkov claimed that an unnamed official from the Russian Sports Ministry used sending him lists of national athletes, whose doping samples he had to swap during the 2014 Sochi Olympics.

Rodchenkov also said that he developed a special cocktail consisting of three banned doping substances intended for the national athletes at home Games two years ago.

On the whole, the ex-doping official claimed that the Russian sports authorities allegedly prepared a special doping program for national athletes in order to win most of the medals at home Winter Olympics in Sochi in 2014. Rodchenkov added that some Russian Olympic gold medalists in Sochi took banned substances.

The Russian Olympic team finished the 2014 Olympics in Sochi in the first place of the medals standings with the overall result of 33 won medals (13 gold, 11 silver and 9 bronze medals) surpassing its previous Winter Olympics record of 11 gold medals, set at the 1994 Winter Games in Norway’s Lillehammer.