My Swedish is a little rusty, but from what I read in the media and the police press announcement, the following happened:
The Malmo hackerspace is located in a building that has roots in the squatter/anarchist collective scene. That group was organizing a party there where they were apparently selling alcohol without a proper license.
During the raid of that party, the police simply went through the whole building. Including the hacker space.
If this is what happened then the raid had probably completely nothing to do with the hackerspace and everything with their hosts.