Mühlhausen (dpa/th) – After the roof structure of an apartment building in Mühlhausen (Unstrut-Hainich district) caught fire on Monday night, the criminal police are investigating. A police spokeswoman said there were no injuries. However, the house was no longer habitable and the residents had to be accommodated elsewhere. The cause of the fire is still unclear. According to the police spokeswoman, the fire caused property damage of at least 50,000 euros.