There was problems in the stands during Juventus' 1-0 win over Inter Milan last night.
Gazzetta dello Sport reports seats were torn up, toilets damaged and a staff member at Juventus Stadium shoved.
It's reported a group of Inter ultras were not allowed in to the away end due to issues with the Fan Passport and different names on their tickets.
In protest, the other ultras already present walked out, but remained in the Stadium, tearing up some of the seats and damaging the toilet facilities.
The most serious part of the allegations is that a female steward was shoved over.