Several callers alerted the police that something had exploded in central Borås. But when the police arrived at the scene, no injuries, injuries or even a detonation site were found.

- It is strange in a way, but the conclusion we draw is that it is a banger of the more powerful kind, says Morten Gunneng.

According to the police, the pressure wave after the detonation should have triggered several store alarms and people who were on the spot should not only have felt the bang but also the smell of gunpowder.

- Bangers have the ability to create quite extensive pressure waves.

The police will write a report, but the heading is still unclear.