Director Michele Placido wanted Paz Vega to play Patrizia but she could not take on the role because of scheduling conflicts. Anna Mouglalis was cast instead.
When Freddo (Ice) shoots Roberta's killer (Ciro Buffoni) outside the church at the end of the film he uses a revolver but you can clearly hear shell casings hit the ground after each shot which would only happen with a semi-automatic pistol.
The section of Bologna Central Station that is shown when the bomb explodes is the wrong part of the building. The waiting room, where the real bomb exploded is on the left side of the main entrance, this is actually part of the ticket hall which remained mostly undamaged during the explosion.