At 13:30, an automatic alarm went off at Löfberg Kaffferosteri in the inner harbor in Karlstad. When the rescue service arrived at the scene, it was hazy in the room and it was found that it had burned in the ventilation system.

"But there was no longer any active fire," says Glenn Appel, fire engineer at the rescue service in Karlstad.

At 2:45 pm when the force left the house, a new black smoke alarm came from the roof of the coffee scraper.

-We've located that fire to the roof. There was fire in the roofing board around a ventilation pipe and they have broken the roof to access and extinguish, says Glenn Appel.

Do you know what happened?

-It is not entirely clear, but probably the first fire brought with it some glowing particle that has taken up the roof. That it has come from the ventilation system is most likely.

Now emergency services personnel are still at the scene trying to find exactly where it may have started and why the first fire occurred.