No one was injured and it was unclear at midnight what had detonated.
We still don't know if it's about one or two explosions or if it was targeted at a house or not, says Emil Jarlback, police commander.
The alarm came in at 11 pm about two loud bangs.
We receive it as some kind of detonation and there is material damage to one or two cars, says Emil Jarlback.
The area is cordoned off pending the arrival of the national bomb squad and police technicians. No residents have been evacuated.
At present, we have initiated a preliminary investigation into reckless endangerment and violations of the law on flammable and explosive goods, but it's too early to say if we have any suspects, says Emil Jarlback.
