Jercy Sarnecki says that what happened is of course extremely tragic, but at the same time not completely unexpected.

- Unfortunately, it works this way when you have this spiral of violence that we have, says Sarnecki.

But how is it that criminals target parents and relatives in particular?

- You can associate it with old times or clan societies where it is considered that the entire family or clan is responsible for an individual's misdeeds, says Jerzy Sarnecki.

Jerzy Sarnecki, on the other hand, believes that in this case it is more about wanting to hurt the person you are after.

Watch the video for his analysis of the fatal shooting in Tullinge – and what he thinks will be required going forward.