The accident occurred at 19 o'clock on Thursday evening and was taken by ambulance helicopter to the hospital.
It's an A-tractor that according to witnesses drove at a higher speed than allowed. It has gone off the road, lost control and then rolled off the road, said Göran Karlbom, officer on duty at police region West, on Thursday.
In total, four people were in the vehicle.
A man in his 20s who drove the vehicle has been arrested on suspicion of gross negligence leading to another's death, gross negligence leading to bodily harm and reckless driving.
The vehicle has been seized for technical examination.
