EURO 2012 organisers have ordered an inquiry into claims Russian fans racially abused a Czech Republic footballer.
Uefa is investigating reports Ethiopian-born defender Theodor Gebre Selassie was a victim of the latest racist incident to hit the event.
Selassie, the first player with an African background to represent the Czechs, was allegedly taunted during their 4-1 defeat by former Rangers manager Dick Advocaat's side.
Video footage has emerged showing Russian fans apparently kicking and punching Polish stewards and several suspects are wanted by police. Four people required hospital treatment after the clash.
It came after the Netherlands suffered racist taunts by Polish supporters in an open training session in Krakow.
Uefa said in a statement: "After having looked at the security reports and available images, Uefa has today announced that disciplinary proceedings have been opened against the Football Union of Russia for the improper conduct of its supporters (crowd disturbances), the setting off and throwing of fireworks, and the display of illicit banners."
Russian Sports Minister Vitaly Mutko called the claims "nonsense" and said he was at the match and did not witness any racism.
Mr Mutko said: "Our fans started doing a wave but the Czech sector didn't stand up so they started condemning the Czechs with the appropriate noises."
He did not comment on the violence at the end of the match.
Meanwhile, Uefa has also opened disciplinary proceedings against the German and Portuguese football associations after Saturday's match. The German FA is facing action over alleged missile throwing by supporters, while the Portuguese FA is facing proceedings for delaying kick-off to the second half.
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