Ten injured as fans from both clubs fight each other with knives, stones, bottles, and firecrackers.
Three were stabbed, one in the throat which required life saving emergency surgery. Also attacked was a car carrying a woman and her two children. They escaped but the car was destroyed. Police also discovered a cache of knives and other assortment of weapons in the stadium.
It has been a relatively quiet season so far but these incidents show violence in the Serie is just a stone's throw away.