Uefa has opened disciplinary proceedings against CSKA Moscow for the "racist behaviour of their fans" during their home Champions League match against Manchester City.
City midfielder Yaya Toure said he was subjected to racist chanting during his team's 2-1 win in Moscow on Wednesday.
The European football governing body says the case will be dealt with by its disciplinary board on 30 October.
CSKA Moscow consider the racism allegations to be "unfounded".
Uefa is also looking into the setting off of fireworks by home supporters during the match in Russia's capital.
In May, Uefa announced that in the case of racist incidents involving spectators, a partial stadium closure would be applied for the first offence and a full stadium closure for a second, coupled with a fine of 50,000 euros (£42,800).
CSKA's next home game in the Champions League is against Bayern Munich on 27 November, before which they visit Manchester City on 5 November.
Ivory Coast international Toure said he was "furious" and reported the chants to the referee during the game and afterwards.
But CSKA are "surprised and disappointed" by Toure's claims.
A club statement read: "Having carefully studied the video of the game, we found no racist insults from fans of CSKA."
CSKA spokesman Michael Sanadnze told BBC Radio 5 live: "We have nothing to hide, of course, and we have confirmation from the match delegate and the venue director that they themselves didn't hear anything special."
Lord Ouseley, chairman of anti-discrimination body Kick It Out, said the latest incident would "test" Uefa's new sanctions.
He added referee Ovidiu Hategan should not officiate again after failing to follow protocol when Toure reported the incidents to him.
Under guidelines issued by Uefa in 2009, referees have the power to tackle racist chanting from supporters in a number of ways.
As a first step, they can stop a match and ask for warnings to be made over the public address system.
http://www.bbc.co.uk/sport/0/football/24654499
City midfielder Yaya Toure said he was subjected to racist chanting during his team's 2-1 win in Moscow on Wednesday.
The European football governing body says the case will be dealt with by its disciplinary board on 30 October.
CSKA Moscow consider the racism allegations to be "unfounded".
Uefa is also looking into the setting off of fireworks by home supporters during the match in Russia's capital.
In May, Uefa announced that in the case of racist incidents involving spectators, a partial stadium closure would be applied for the first offence and a full stadium closure for a second, coupled with a fine of 50,000 euros (£42,800).
CSKA's next home game in the Champions League is against Bayern Munich on 27 November, before which they visit Manchester City on 5 November.
Ivory Coast international Toure said he was "furious" and reported the chants to the referee during the game and afterwards.
But CSKA are "surprised and disappointed" by Toure's claims.
A club statement read: "Having carefully studied the video of the game, we found no racist insults from fans of CSKA."
CSKA spokesman Michael Sanadnze told BBC Radio 5 live: "We have nothing to hide, of course, and we have confirmation from the match delegate and the venue director that they themselves didn't hear anything special."
Lord Ouseley, chairman of anti-discrimination body Kick It Out, said the latest incident would "test" Uefa's new sanctions.
He added referee Ovidiu Hategan should not officiate again after failing to follow protocol when Toure reported the incidents to him.
Under guidelines issued by Uefa in 2009, referees have the power to tackle racist chanting from supporters in a number of ways.
As a first step, they can stop a match and ask for warnings to be made over the public address system.
http://www.bbc.co.uk/sport/0/football/24654499
Paul Marin -19 is one thing, 20 is a whole other matter. It gets even worse if they win the UCL. *groan*.
05/18/2011.MU fans naah cough, but all a unuh a vomit?-Lazie 1/11/2015
Making his feelings clear: Yaya Toure tells referee Ovidiu Hategan about the abuse from CSKA Moscow fans
What's going on? Toure gestures towards the fans
Time to act: Toure has called on UEFA to take action against fans who racially abuse players
Target: Toure was the victim of monkey chants from sections of the Moscow crowd
Respect: Toure wore a 'No to racism' armband
Him too? Fernandinho (right) may also have been the subject of racist abuse during the game
Job done: But Fernandinho and City managed to take all three points in Moscow on Wednesday night
Major problem: Russian fans have a long history of racism towards black players
Abuse: Toure is believed to have been subjected to monkey chants
Focused on the game: Toure did not seem to let the abuse affect him as City triumphed 2-1
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