The incident occurred in the early hours of Friday morning at the restaurant and nightclub Babel in the southern Swedish city.
“We have ascertained that there was an explosion and there is damage to the front of the building,” Magnus Lefèvre from the regional police force told TT.
The restaurant and club was closed at the time of the explosion and there are no reports of any injuries in the blast.
Several loud bangs were reported by local residents shortly after 00.30 am, but police did not find any other areas affected by a blast.
Source: The Local SE