We're get the latest on the olympics. Just over a week before the opening ceremony, American intelligence officials are out with a new warning about terrorism and ABC's Brian Ross is here with more on... See More
We're get the latest on the olympics. Just over a week before the opening ceremony, American intelligence officials are out with a new warning about terrorism and ABC's Brian Ross is here with more on charges of dirty and dangerous deals surround the sochi games. Good morning, Brian. Good morning, George. First new developments overnight. Russian authorities saying this morning they have arrested two men, brothers, believed to have been involved in the bombings in the Russian city of volgograd last month. This comes as U.S. Intelligence officials are warning of what they call a substantial potential for a terror attack near the games and it again raises the question of why was sochi so close to a hot bed of terrorism chosen in the first place? Russian president Vladimir Putin put his prestige on the line to win the games for sochi. The choice of sochi is the best choice. Reporter: And the decision by the international olympic committee to choose sochi seven years ago was a big day for Putin and Russia. Awarded to the city of sochi. Reporter: But this morning an ABC news investigation has found that behind the scenes Russia says it was helped in getting the needed votes by this mystery man, gafore rachimov. But reports obtained by ABC news from U.S. And other law enforcement authorities say he is a key player in a huge organized crime network that smuggles heroin through Russia into Europe. He is one of the four or five most important people in the heroin trade in the world. He's absolutely a very major and very dangerous gangster. Reporter: Yet that's the man Russia acknowledges it used to help get the olympics. The Russian olympic committee publicly thanked him for his single-minded work in delivering the votes without which it would have been hard for sochi to count on the victory. Russian investigative journalist says those in his circle have boasted of making cash payments to get the votes for sochi. Translator: There was obviously some sort of agreement. Reporter: He's seen here at a recent event and denies paying bribes but confirmed to ABC news through a translator in role in helping them get the olympics. The translator said "He convinced them because of his good relations with these people. He has great influence." The winter olympics could have been held in the Austrian alps or mountains of South Korea but, of course, they didn't have the influence of this accused drug dealer to help them. Putin wanted this so badly. Brian, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.