Four other people were treated on the scene for minor smoke-related injuries, while the approximately 30 people who resided in the building were evacuated, many with the help of ladder trucks.
The fire’s one fatality was found in a smoke-filled apartment.
Firefighters from four stations were called in to fight the blaze, which was extinguished by 5.30am.
The apartment where the fire started was on the ground floor and was totally destroyed. The fire then spread to the apartment above, but was then brought under control by firefighters.
A forensic investigation is now underway to determine the cause of the fire.
“As of now its unclear when residents can return to their apartments. The building is cordoned off right now, in any case,” said emergency services spokesperson Patrik Kullman.