French club Lille says two of its supporters were stabbed when a group of fans were attacked in a bar ahead of Wednesday's Champions League game at Bologna.

Italian media, quoting local police, reported that around 80 individuals, believed to be Bologna supporters, attacked approximately 30 Lille fans outside a bar in the university district. The attackers were armed with metal bars and belts.

Lille say two fans have been stabbed in a "cowardly and intolerable attack" before their Champions League match against Bologna on Wednesday.