Rome Mayor Ignazio Marino is calling for Feyenoord or the Netherlands to pay for damages to the city after fans of the football club rampaged through the famous Piazza di Spagna.

Marino tells RAI state TV, "Whoever breaks it should fix it. Someone has to accept responsibility — either the football club or the Netherlands."

The square and the iconic Spanish Steps were left covered with beer bottles and other litter, while the recently restored Barcaccia fountain was damaged in the clashes before Thursday's Europa League match at Roma, which ended in a 1-1 draw. Several police officers were injured and the ANSA news agency reported six Feyenoord fans were arrested.

On Wednesday, 23 Feyenoord fans were arrested after causing trouble in another downtown area.

Marino said, "It was urban warfare."