A significant fire broke out in a 40-meter-long operations building in Øvre Eiker, Buskerud, late Friday night.

The blaze, which started around 1:10 AM, quickly engulfed the structure, causing a third of it to collapse.

Firefighters are actively working to extinguish the flames and prevent the fire from spreading to nearby buildings.

The building housed four boats and a caravan at the time of the incident.

Police are interviewing witnesses and attempting to contact the company that owns the building.

The cause of the fire remains unknown, and efforts to fully extinguish the blaze are expected to continue into the morning.