Italian football suffered another tragic blow on Sunday as a Parma fan died after being run over by a bus on a weekend that saw AC Milan's Champions League hopes take another costly dent.

Matteo Bagnaresi was run over at a service station by a bus carrying Juventus fans after skirmishes broke out between rival sets of supporters.

It was the second time this season that a fan died at a service station, with Rome DJ Gabriele Sandri accidentally shot by a policeman back in November after clashes broke out between Juve and Lazio fans at a motorway rest stop.

That incident sparked violent protests around several grounds with two matches being subsequently postponed.

Authorities decided to postpone the Juventus-Parma clash on Sunday in a bid to help avoid a repeat of November's ugly scenes.

On the pitch Milan crashed dismally 2-1 at home to Atalanta, leaving its hope of snatching fourth place from Fiorentina, which lost 3-1 at Udinese, looking decidedly shaky.

"We have to move on this week and get ready for the next match. Hopefully Kaka will be back. We've got to keep working in taining, but we need to defend better," said Milan coach Carlo Ancelotti.

"We have to be careful. We lost to Sampdoria at home, and now this makes two (home) losses in a row. It makes things very complicated for us."

The result was no less than the visitors to Milan's San Siro stadium deserved as they completed a league double over the reigning European champions.

Sergio Floccari opened the scoring at the second attempt after Ferreira Pinto skipped down the right and crossed to the near post.