Just before midnight, the police received a call about a loud bang from residents in the area.
When we arrive at the scene, we can establish that some form of explosion has occurred in connection with an apartment building. There is damage to the door of a stairwell, says Torbjörn Lindqvist, duty officer at the police in Region East to TT.
There is also damage to a window, but no personal injuries have been reported. Forensic technicians will investigate the scene and the national bomb squad has also been contacted. It is not possible to say yet, according to Torbjörn Lindqvist, what caused the explosion.
A preliminary investigation has been initiated regarding suspicion of general endangerment.