Investigation Launched Into Rio De Janeiro's Successful Olympic Bid
The International Olympic Committee has started an immediate investigation into allegations that up to nine of its members were bribed to vote for Rio's bid for the 2016 Olympics.
The claims were made by Rio de Janeiro's former state governor Sergio Cabral in a court in Rio on Thursday.
Cabral, sentenced to almost 200 years in prison for his part in several corruption scandals, claimed he sent $US2 million ($A2.9 million) to Lamine Diack, the former president of world athletics governing body IAAF, to secure votes in bidding.
In his testimony, Cabral named Brazil's Olympic Committee president and Rio 2016 boss Carlos Nuzman as the main conduit to Diack, and said IAAF senior vice-president and Ukrainian pole vault great Sergey Bubka and Russia's four-time Olympic swimming champion Alexander Popov were among those who received bribes to back the Brazilian city.
Cabral did not name anyone else but said Nuzman told him Diack "traditionally sells four, five, six votes" and Rio would need those to get through the first round of voting.
Cabral added that Diack guaranteed Rio six votes for $US1.5 million ($A2.1 million) and offered three more for an extra $US500,000 ($A712,570), which Rio paid.
In a statement released to PA on Friday, an IOC spokesperson said: "The IOC chief ethics and compliance officer (CECO) has immediately followed up on the allegations made by the former Rio State Governor Sergio Cabral, who is already serving a jail term for corruption.
"The CECO has contacted the IOC members mentioned in his testimony.
"The IOC is fully committed to address any issues also those which happened before the far-reaching reforms of Olympic Agenda 2020."
Senegalese Diack resigned as an honorary IOC member in 2015, a day after he was suspended following the launch of a French investigation into corruption and money-laundering. The 86-year-old will stand trial in France.
Nuzman's IOC membership was suspended in October 2017 following his arrest in Brazil on corruption charges, which he is fighting.
Bubka and Popov, however, are still IOC members and Bubka is also the president of Ukraine's national Olympic committee.
The 55-year-old Bubka said on Twitter he rejected "all the false claims" made by Cabral and claimed Diack never contacted him about his vote.
He added his lawyers would write to Diack to ask him to explain why Cabral "wrongly claims" the former IAAF chief said he could "secure" Bubka's vote.
The 47-year-old Popov, who sat on the IOC's evaluation committee for the 2016 Games, issued a similar statement, saying he was "extremely surprised at the appearance of such information with the illegal use of my name".
He added "with great regret" that he did not vote for Rio in 2009, knows nothing about Cabral's claims, will cooperate with the IOC investigation and start legal proceedings to protect his name.