"It's a threat against our free democracy. It must be met with society's full force", writes Busch on X, formerly Twitter.
The leader of the Sweden Democrats, Jimmie Åkesson, thinks the situation is serious, but that it's too early to speculate about who or what is behind the death of Koran burner Salwan Momika.
I think that before we know, we shouldn't speculate. But we do have parallel structures in Sweden as well, who take the law into their own hands, he says.
Salwan Momika was shot to death in Södertälje on Wednesday evening. The news of his death has created great attention around the world.
It's very distasteful to celebrate that someone has been murdered, of course, but I'm not informed, says Åkesson.
