A man was seriously injured in a deflagration on Friday evening at a folk festival in Markneukirchen (Vogtlandkreis).
The showman had stayed in a caravan at the Erlbacher Kirchweih, as the police announced on Saturday.
After the fire brigade ensured that no further explosions were to be feared, the police examined the car.
Markneukirchen - You are investigating on suspicion of causing an explosive explosion.
dpa