Helicopters crash near Berlin stadium The pilot of one of the helicopters was killed in the crash, according to Bild newspaper, which had a reporter at the scene. Two people were seriously injured, according to the emergency services. A police officer works at the scene where two police helicopters crashed near the Olympic stadium in Berlin (AFP/Getty Images) An eyewitness told German broadcaster NTV: "It was a real snowstorm. Suddenly we heard a bang and someone shouted 'Everybody down'. Then there was blood everywhere. Next to me was a huge puddle of blood. A fire service spokeswoman said that visibility at the scene was very limited. A police spokesman said a decision had been made to carry out the training exercise despite the snow. Heavy snowfalls have disrupted transport in Germany recently, leading to the closure of Frankfurt airport earlier this month after five inches of snow fell. Severe weather contributed to a vehicle pile-up on a motorway north of Frankfurt, which involved more than 100 cars. Germany's Interior Minister Hans-Peter Friedrich, who visited the accident scene an hour after the crash, said: "I've seen what there is to see. We are thinking of the families and the injured.