UEFA has opened disciplinary proceeding against CSKA Moscow following their Champions League defeat against Manchester City.
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CSKA fans are alleged to have racially abused City midfielder Yaya Toure and set off fireworks during the game, which City won 2-1 thanks to a brace from Sergio Aguero.
A UEFA statement read: "Proceedings have been opened against CSKA Moscow for racist behaviour of their fans (article 14 of the UEFA disciplinary regulations) and for setting off of fireworks (article 16) at last night's UEFA Champions League group stage match in Moscow against Manchester City.
"The case will be dealt with by the UEFA Control and Disciplinary Body on Oct. 30."
However, the Russian club have denied Toure’s accusation, and believe they have no case to answer, claiming: "Nothing special happened."
Deputy media manager Michael Sanadze told Sky Sports News: "There is no subject to discuss. Nothing special happened. There was a lot of noise in the stadium. Nobody else, other than Yaya Toure, heard anything. The only trouble that has come about was because Yaya Toure heard something."
Toure told Romanian referee Ovidiu Hategan about the chants during the game and UEFA has said it is waiting for the official’s report before deciding how to proceed.
UEFA introduced new regulations in May allowing it to close some or all of the stadium of clubs whose fans have been found guilty of racist behaviour after deciding fines were not an adequate deterrent.
Toure said on Wednesday: “I told the referee, 'I am furious'. It was disappointing and always we are talking about that -- having no racism. It was unbelievable and very, very sad for my part.
"I think if UEFA did something it will be very nice because we want to stop that. Some songs from the crowd were quite stupid, but I think UEFA has to do work for that because every time we say something and they continue, and something has to be done to stop that.
"I'm very, very disappointed about what those fans have done and I think UEFA has to take action because players with the same colour of skin will always be in the same position. For me, as captain, I was wearing an armband which said 'No to racism' and I was totally disappointed."