Overview
- Police said a 17-year-old was found in the street with severe facial injuries and taken to hospital.
- The victim remains in life-threatening condition after what officers described as a hammer attack.
- A young man who phoned police to report he witnessed the assault is in custody for questioning.
- He told officers two friends carried out the attack after a dispute over a football jersey.
- The Strasbourg prosecutor opened an investigation, and authorities have not announced any charges.