A 14-year-old youth suffered life-threatening injuries in a fight in Essen on Thursday evening.
He came to a hospital.
A young person of the same age was slightly injured.
Suspects are a 14-year-old and a 35-year-old.
The younger one could have been arrested in the evening near the crime scene, the police reported in Essen on Friday.
Food - murder weapon should be a striking tool.
The police are investigating dangerous bodily harm.
At first nothing was known about the background of the brawl.
dpa