Five Manchester United fans, including a 16-year-old boy, have been stabbed ahead of the club's game against Roma.

Violence erupted between a group of 50 rival fans on a bridge near the Stadio Olimpico in Rome.
Police used two baton charges to disperse the fans and arrested two British nationals.

The last time the two teams met in April, 11 fans were taken to hospital after violence in the stadium. The stab injuries are not said to be serious.