Swiss cantons are recommending further measures to stamp out hooliganism at football and ice hockey matches. These include a "fan card" and a ban on alcohol.
The Conference of Cantonal Directors of Justice and Police, meeting in Hergiswil in central Switzerland, said that fan cards would be introduced in the top leagues to identify more easily trouble makers in stadiums.
The cantons said they were no longer prepared to accept violence in them.
"Families must be able to attend matches in a peaceful atmosphere again," the vice-president of the conference, Karin Keller-Sutter told journalists.
She said that about 900 police officers had to be deployed weekly to maintain order in Swiss stadiums, a situation she described as "untenable".
Apart from identification measures, the conference also recommended the introduction of "combined tickets" for those wishing to travel to away matches.
This, it argued, would allow fans to travel in organized transport to the visitors' stands in stadiums and avoid clashes with home supporters.
swissinfo.ch and agencies