How seriously injured the person is, the police cannot say. Nor whether any object has been used.
The police have filed a report on severe assault, but no suspect has been arrested.
We are interviewing witnesses and will see if there are any surveillance footage. We have good hopes of getting evidence that way, says the police's press spokesperson Robert Sennerdal.
The alarm about the incident came at 20.30 on Tuesday.
What do you think?