Lazio hooligans attacked Real Sociedad fans in Rome on the eve of Thursday’s Europa League match between the two sides.
A group of Sociedad fans were set upon while drinking at a pub in the Monti district of the Italian capital on Wednesday night.
The attackers, armed with clubs, knives and other weapons, fled the scene when police arrived.
Nine Sociedad fans were injured, three of whom suffered stab wounds. One victim, aged 23, was in a serious condition.
