- It is definitely a new development that is linked to the criminal network, says Magnus Köhler at Södertälje Police.

The number of surveys has increased for several years in a row, but both last year and so far this year, the increase has been unusually large.

- All types of explosives have increased. It is not possible to say that specifically hand grenades or, for example, image tonings are increasing more than anything else, but everything has increased, says Annika Carlsson, group manager for the chemistry section at NFC.

Seizes to a greater extent

The police share the view that the explosions have increased, and believe that this is a new development that is linked to conflicts between criminal networks. They also seize more explosive substances before they have had time to detonate, which also means that the investigations increase.