Clashes between Lazio and Roma supporters near the Olympic stadium - last minute. Police intervened to separate the two groups, even using tear gas.
A Roma fan has been arrested. The derby is scheduled for 6pm on Sunday. The forensic images are already being examined to identify who took part in the riots. The clashes occurred around 9.30am, when around 200 Lazio fans, all disguised, moved towards the River bar. The group of 100 supporters reached them and scuffles began. To disperse them, the police, who were subjected to card bombs, used teargas.