It is currently unclear how seriously injured they are.
The incident is being investigated as an attempted murder. The police do not want to comment on whether any suspect has been arrested.
Is there any gang connection?
We are working broadly at the moment, but I cannot go into any possible theories. We do not initially suspect that it is terror-related.
We have a large resource on site in the area, so our assessment is that there is no danger to the public, although I understand that one can become worried, says Ahlén-Svalbro.
The alarm came just before 2 o'clock at night towards Saturday.
