A man wielding a knife has injured about 20 people attending the opening of Berlin’s new rail station.Police said the man ran down the street stabbing people before being arrested. Some of the injured are in a serious condition. It happened just a short distance from the showpiece main station which had been inaugurated by Chancellor Angela Merkel a few hours before. Huge crowds had turned out to watch a firework display. The five storey glass station opened just in time for the football World Cup in Germany, starting in two weeks time. Located near where the Berlin wall used to stand, it’s Europe’s biggest station and cost 700 million euros. “This station with its glass, its 5 stories and its shops, open and open to the world, represents a symbol for Berlin and for our country, the federal republic of Germany” said Chancellor Merkel. “This opening to the world is what I am hoping for”, she said. More than a 350,000 passengers and 1100 trains per day are expected to use the new station. Rail services with the rest of Germany will be significantly quicker.