The fire broke out Monday in an office at the Rikshospitalet in Oslo. The fire was quickly extinguished, but 150 people had to be evacuated.
Oslo Fire and Rescue Department sent five vehicles to the location and smoke divers were in place.
There are no people inside the building, but three people have been exposed to smoke, according to the Oslo police. Around 150 people evacuated.
The fire has burned some computer equipment, according to police this was a possible cause.
Source: NTB scanpix / Norway Today