The man, who was discovered naked in the car boot, had been reported missing on Thursday evening. According to reports he was apprehended and bundled into the car in the southern Gothenburg suburb of Askim and driven away.
Somehow, he managed to call police from a mobile and raise the alarm, but as he had no idea where he was, the only way for them to try to find him was by driving around with wailing sirens hoping he could hear.
With time running out, police were wary of the man losing consciousness in the car boot, so they summoned a helicopter to fly low over the entire area. Eventually the man, who has still not been named by police, heard the rotating blades and police managed to track him to a BMW on a pier at a marina.
When the police searched the car they found him in the boot, tied up and covered in blood. The BMW had not been reported stolen and his clothes were found close by, adding to the mystery.
The car and clothes were taken away for further investigation, while the man was taken to hospital with injuries to his abdomen.
According to local press reports, the victim has admitted that he was deep in debt to a Hells Angels gang, which he said was the reason behind the attack. Meanwhile, police investigations continue.