A couple of young people are said to have set off the fireworks which caused the bus to fill with smoke.
No one is said to have been injured during the incident.
The young people must have fled the scene.
Taken out of traffic
The bus itself must be undamaged.
- The bus has been taken out of service by the traffic company, says Rickard Lundqvist, press spokesperson for police region South.
- It may seem strange considering that it is classified as vandalism, but it has to do with the smoke, says Rickard Lundqvist.
For allergy sufferers and those sensitive to scents, the bus must now be ventilated before it can be used again.