According to the police, the 14-year-old, who was critically injured in a fight in Essen, has now left the intensive care unit.
The young person was approachable, the police said on Monday.
Essen - According to initial investigations, the 14-year-old is said to have tried on Thursday evening to settle a physical argument between a 35-year-old man and a 16-year-old teenager.
The police said he was hit with a blunt object by the 35-year-old's 14-year-old son.
The son had been arrested and interrogated on the day of the incident.
The father has not yet been able to be questioned.
According to the first report, a 14-year-old girl was also slightly injured in the brawl.
dpa