Alexander Shprygin was among 43 fans held on Tuesday in southern France after serious violence et Russia’s Euro 2016 clash with England in Marseille.
After interception of a coach carrying Russian football fans suspected of hooliganism, Moscow warns Paris against a 'significant aggravation' in bilateral relations.
Assistant chief constable Mark Roberts said his police spotters saw Russian 'Ultras' putting on gum shields and martial arts gloves before Marseille violence.
French media reported three England fans were seriously injured in fierce fighting between English and Russian groups and locals.
Two England fans were arrested after clashes with local youths in the Old Port district of Marseille ahead of Saturday's England-Russia Euro 2016 match.
French police have given their British counterparts the images of seven suspects after a black man was pushed off a Paris metro train on Tuesday.