Mr Berlusconi, who also owns the AC Milan team, issued a statement warning: “There is a clear risk of even more serious incidents in future, a risk which must be avoided by all possible means.”

It added while authorities were examining preventative measures, “the most drastic measures available should not be ruled out if necessary.”

In the latest of a string of violent clashes, Italian riot police were forced to use tear gas on Juventus supporters on Wednesday night.

The local fans were trying to attack a bus load of Liverpool supporters arriving for the UEFA cup quarter final match in Turin.

Juventus fans threw an array of missiles at the police, and three vehicles, including two police cars, were set on fire.

Last week’s first leg match in Liverpool was the first meeting between the teams since the 1985 Champions Cup final in Brussels, where 39 fans were crushed to death in a riot started by Liverpool supporters.

In Wednesday’s match, the Liverpool fans left the stadium shortly before midnight and were escorted by police to Turin’s Caselle airport for an immediate return home.

The attacks came 24 hours after a Champions League game between local rivals AC Milan and Inter Milan was called off due to violence.

A disallowed goal saw Inter fans throw flares onto the field, one of which struck AC Milan goalkeeper Dida on the shoulder.

Italian police have arrested four people and expect to make further arrests soon.

It was the second match in Italy to be abandoned this season – in September AS Roma’s match with Dynamo Kiev was stopped after the referee was struck by a missile.

At the weekend, Lazio fans brandished swastika flags and fascist banners during a Serie A game against Livorno.

There was crowd trouble at several grounds across the country, with scores of fans arrested and 89 police officers injured in fighting.