Police have reportedly been called on to intervene following a break out of fights between the supporters of national teams Russia and Poland.
The two Group A sides are due to go head to head at the National Stadium in Poland this evening for the second round of the Euro 2012 matches.
It is understood that a scuffle between the rival supporters has occurred in Warsaw just hours before the match, according to Sky Sports News.
Issues of racism have also come to light in the early stages of the elite tournament with UEFA confirming that they have begun investigating cases of alleged racist chants.
