UEFA expressed its "utter disgust" at the violent scenes that marred the 1-1 draw between England and Russia in Marseille and vowed to tighten security and segregation at Euro 2016 games.
At the final whistle hundreds of Russian fans broke through a feeble security cordon at the southern end of the ground to attack their England counterparts who made a hasty retreat towards the exits.
Security personnel appeared powerless to prevent the trouble, while police were slow to act.
UEFA confirmed open disciplinary proceedings will be opened against the Russian Football Union after the incidents, and the governing body condemned those who indulged in the violence.