A female witness was later interviewed by the press as she had seen the events up close. The reason why she had been in such close proximity to the events: she had failed to notice that there was a firefight going on.
She had walked right up next to the Robbers getaway car before discovering that something was afoot.
Explaining how she had not heard anything since she had loud music playing in her ears, she did not become aware that anything was strange until she happened to notice several people who had thrown themselves flat on the ground.
At this point she became aware of an police officer who was screaming at her to: "get her head down, get away from there and take cover."
The woman explained that she was shocked and only backed away a few meters as the Robbers fled in the car parked just in front of her.
Neither the woman nor any bystander ended up with any discernible injuries. One robber was shot though.
Original article (in swedish): http://www.dn.se/sthlm/det-smallde-kott-sen-foll-en-av-mannen
Video of the shootout: http://www.aftonbladet.se/nyheter/article16019303.ab
Article about the shootout in English: http://www.thelocal.se/45428/20130104/#.UOb4CXdVse8