It was at four o'clock during the night towards Sunday that the alarm about a large fire in an open garage area on Rådjursvägen on Marieberg in Umeå came in to SOS Alarm.

About 20 cars were affected by the fire, of which 15 were completely destroyed in the fire.

The police classify the case as arson and on Monday, technicians were on site to try to determine the cause of the fire.

But the investigation can neither confirm nor rule out that the fire was started and it is still unclear how the fire originated.

The police have conducted a number of interrogations with witnesses, residents in the area and the affected vehicle owners.

The investigation will continue and more interrogations will be held, the police announce on their website.

The police are also looking for tips and observations that can be linked to the fire.