According to TT; The explosion occurred at five in the morning (local time), and caused a fire.
The area's emergency services said: "Several apartments and staircases were affected by the explosion, and it is not clear at this time what caused it."
The police launched a preliminary investigation into the explosion, pointing out that there is no suspect in the case at the present time.
The Swedish police also confirmed on its website that it is working to evacuate residents of the area.