An old bunker in Hamburg, Germany got fire and explosion on 4^th before dawn.This explosion  made at least 21 people hurt. At 4:20am on 4^th, a 25meters height old bunker in a residential area of Hamburg got fire suddently , and exploded when fire fighting. At least 21 people hurt in this fire including 6 firemen. The bunker was a air-raid shelter before, and a wood working workshop which was used to store a great quantity of essential oil.