At least five people were injured on Friday in an explosion at the Red Cross in the Bavarian town Memmingen, local media reported.
The explosion reportedly took place in the early morning, due to a gas leak, likely from a defective gas pipe.
A rescue helicopter transferred one of the injured people to a hospital, police told DPA.
Authorities have evacuated several houses surrounding to the explosion scene.
Local daily Augsburger Allgemeine reported that authorities were trying to expose the pipes to find the gas leak and prevent another explosion.