Police, rescue services and an ambulance were alerted to central Värnamo at nine o'clock.
According to the police, a person must have carried out a repair on a vehicle outdoors and in connection with this received an object over himself.
The injured person was taken by ambulance to hospital and the injury situation is considered very serious.
The police do not yet want to release any further details from the accident, but the area has been cordoned off and the accident will be investigated.
Also accident in Mullsjö
A workplace accident also occurred in Mullsjö during the morning.
A man in his 50s was injured when he was about to unload a truck and got goods over him.
The man has been taken to hospital, but the injury situation there is still unclear.