UEFA president Michel Platini today demanded an internal investigation into Yaya Toure’s racism claims.
Platini wants to probe the accusations of monkey chants by CSKA Moscow fans which were reportedly aimed at Toure.
Russia host the World Cup in 2018 and Toure’s claims have further damaged the countries reputation with dealing with racism.
The Manchester City midfielder was angered during their 2-1 Champions League win on Wednesday and insisted he had been the victim of racist abuse.
He has also said the Ivory Coast would boycott the World Cup, should they qualify, if Russia do not tackle racism.
City have made an official complaint to UEFA although CSKA Moscow have denied the claims with Toure’s Ivory Coast team-mate Seydou Doumbia, who plays for CSKA, saying his friend was “exaggerating”.
CSKA face a UEFA disciplinary hearing on October 30.