It was on Friday that staff discovered that young people had broken into recycling in Malå.
There they have taken various pressure vessels such as spray cans and fire extinguishers.
- When they run from the place, we get hold of one, so we have the name of one of them, says Ebbe Ström Bergstedt, unit manager Real Estate in Malå municipality.
Then they entered a building where sand is stored and fired to make the spray cans explode.
The life-threatening increase was discovered on Saturday morning and both the rescue service and the municipality are taking what happened seriously.
Malå municipality has reported the incident to the police.
See more in the clip.