More than 100 passengers were injured -- 13 critically -- when two trains crashed head-on Saturday in Amsterdam, Netherlands, police said. At least 56 people sustained severe injuries during the 4:30 p.m. crash near the Sloterdijk district in the west of the Dutch capital, Britain\'s The Guardian newspaper reported. \"We assume many people were thrown around the train by the crash -- against walls, seats and other people,\" police spokesman Ed Kraszewski told Amsterdam\'s AT5 news station. The accident, at a busy intersection of the country\'s rail system, disrupted service between Amsterdam and The Hague and at Schiphol airport, the newspaper said. \"Everybody was in panic. Everybody was screaming. A lot of people were injured. There was a lot of blood,\" passenger Giovanni Laisina said. \"I was shocked in the beginning, but because I don\'t have any injures at all … for me it\'s OK. It\'s a little bit surreal.\" An investigation was under way to determine how both trains wound up on the same track.