It was at 17 that the two men ended up in trouble on Ringvägen on Södermalm. During the conflict, the men were seen jumping out of their cars and at least one of them must have threatened the other with a knife. One of the men then punctured the tires of the other's car, police say.

Chop the tires

A witness on the way home saw the course of events.

- I heard how it was ripped on the street. Then I saw the guy in one car tearing the other man's tire. The other man then stood in front of the car, the witness says.

The noise did not end, but degenerate in the fact that the man in the car drove away a hundred meters with his opponent on the bonnet.

- It happened so much that I started filming. I thought: what the hell is going on, says the witness.

"Understand it was over"

Several police patrols came to the scene. Then both men were left, according to the witness.

- A third man came in between and tried to calm them down. The man in the car remained, he did not try to escape, but understood that it was driving.

The police have launched a preliminary investigation into illegal threats, attempts at serious abuse and damage. One of the drivers has been arrested.