Euro fans clash with police

Police used tear gas and water cannon against brawling football fans in Warsaw on June 12 as Poland geared up to play old foe Russia in a key Euro 2012 duel.

Police guard handcuffed men after they arrested them prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Gero Breloer)

Russian fans arrive under heavy security prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Gero Breloer)

Police arrest soccer fans prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Gero Breloer)

Fans clash prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Gero Breloer)

A flare burns behind police officers prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Alik Keplicz)

Police bring a water cannon as fans clash prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Alik Keplicz)

A handcuffed Polish fan lies flat on the street prior to the Euro 2012 soccer championship Group A match between Poland and Russia in Warsaw, Poland, Tuesday, June 12, 2012. Russian soccer fans clashed with police and Poland supporters in separate incidents in Warsaw on Tuesday, just hours before the two teams were to meet in an emotionally charged European Championship match. Several people were injured. (AP Photo/Gero Breloer)

Polish riot police detain a Russian soccer fan prior to the Group A Euro occer championship match between Poland and Russia in Warsaw, Poland , Tuesday, June 12, 2012. (AP Photo/Czarek Sokolowski)

Polish riot police detain a soccer fan prior to the Euro 2012 Group A soccer match between Poland and Russia in Warsaw, Poland , Tuesday, June 12, 2012. (AP Photo/Czarek Sokolowski)