Information about the incident came after 01 o'clock at night to Wednesday. No person has been injured.
We have called forensic technicians and national bomb protection to the site to investigate.
At half past five in the morning, the national bomb protection had left the site. No person has been deprived of their freedom.
Forensic technicians who secure tracks and other evidence are there and are still working, says duty officer Niklas Berglund.
The police have checked people and cars in the area, hear witnesses and examine surveillance cameras.
The incident is being investigated as general endangerment and serious crime against the law on fire-hazardous and explosive goods.