Matches involving FC Berlin were all security matches and the violent faction of FC Berlin would come to shape the entire 1990–91 season. A group of 500-600 supporters of FC Berlin travelled with a special train to Rostock for an away match against F.C. Hansa Rostock in March 1991. The police did not manage to control the situation despite a record strong presence of more than 600 officers. Riots broke out in central Rostock, where supporters smashed shops, demolished cars and attacked people. Supporters without tickets stormed the Ostseestadion and there were fights with supporters of F.C. Hansa Rostock around the stadium. Riots at the train station after the match had to be suppressed with tear gas and water cannons. The damage was again extensive. Up to 17 shops at the Wismarischen Straße were smashed and looted, the train station was devastated and the special train was vandalized. Two police officers were injured in the turmoil.