Photo: Carsten Rehder / picture alliance / dpa
The 57-year-old father was killed in a knife attack on father and son in Hamburg.
The 28-year-old son was critically injured in the attack in the Altona district on Sunday night, the police said.
The son had gotten into an argument with an adolescent for a previously unknown reason.
The alleged perpetrator, who is said to have stabbed the upper body of the men, was later caught.
According to the police report, any help came too late for the father: the rescue workers could no longer reanimate him and he died on the scene.
The seriously injured son was taken to the hospital in an ambulance.
According to the police, doctors were able to stabilize his condition through an emergency operation.
Accordingly, there was no longer any mortal danger later.
According to the police, the 19-year-old German came into focus during the investigation.
Officials arrested him on early Sunday morning in Hamburg-Iserbrook.
The suspect should be brought before a judge.
The prosecutor and the homicide squad are investigating.
The investigation into the background of the crime is ongoing.
kim / dpa