Udinese and Napoli hooligans clashed on the pitch at the Friuli stadium after Napoli clinched the Serie A title.
Naples descended into chaos on Wednesday evening as hooligans battled with police ahead of Napoli’s Champions League tie with Eintracht Frankfurt.
Napoli and Roma fans on their way to different matches clashed on the M1 motorway near the Tuscan city of Arezzo on Sunday.
Fans of Leicester City and Napoli clashed in the stands at the King Power Stadium after the final whistle of their Europa League match on Thursday.
Football hooliganism has returned to the Europa League with a bang after a two-month break.
Inter and Napoli ultras clashed outside the San Siro ahead of their Seria A match on Wednesday.