There is currently no suspect.

- We classify it as an arson fire then the investigation shows what was the cause of the fire, says Jonas Eronen, press spokesman at the police region in the middle.

The area around the house has been blocked off and a technical investigation will be carried out on site. Police on Monday morning handed over the surveillance of the property to a security company.

- It is considered a crime scene and must be guarded. This is partly why, but also to protect people's property, says Jonas Eronen.

The wind has been burning

According to the rescue service, it is still burning in some smaller places on the roof.

- But we have just handed over control to the property owner. We have let the wind burn out, because it is a concrete beam floor so there is no risk of spreading in the rest of the property, says Robert Björklund, intervention manager at the Rescue Services Enköping-Håbo.

In total, some 60 firefighters from Stockholm, among others, helped with the efforts in place.