As reported by local media in Sweden:

Police have found 3 highly advanced fire bombs on a minkfarm in Blekinge that have been targeted by DBF a few years ago. The bombs were discovered before they had a chance to ignite.

The police bomb technicians say "These fire bombs are very proffessional, among the best built bombs i have ever seen".

The bombs have now been dismanteld and will be taken to a lab for further investigation.