At least 25 people have been injured and one injured in an explosion on Friday at a residential building in the German city of Blankenburg.
Those hurt suffered severe injuries, said the spokesman, adding that it was too early to identify the dead.
Police were also unable to say if the blast was deliberately set off or if it was an accident.
The explosion struck at 9:00 am (0800 GMT) at a five-storey building with 60 apartments, sending splinters flying up to 60 metres away.
Residents in the building have been evacuated, police said, adding that a nearby kindergarten has also been cleared.