According to the police, an alarm was received just before half past ten on Wednesday evening when it was burning in a building in Gottsunda. The extinguishing work has been going on for most of the night and it was not until Thursday morning that the emergency services were able to leave the scene.

"We at the police will now continue to monitor and block the site in order to be able to carry out a technical investigation during the morning," says Johan Näslund, RLC commander at the police region Mitt.

Classified as serious murder

What may be behind the fire is still unclear and at this stage there is no information that any person should have been injured in connection with the incident.

The fire is classified as serious murder.