An attempt to blast a silo that was being removed from the Amagerværket power station has gone wrong and at least three people who were watching have been injured, according to Copenhagen Police.
At least one of those injured has suffered serious burns and has been taken to the Rigshospitalet Trauma Centre.
A large number of ambulances and fire personnel were sent to the scene when the alarm went at 08.30.
Rescue personnel and the Fire Brigade are still searching for others who may have been hurt in the blast.
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Edited by Julian Isherwood