A man was seriously injured in an attack with a glass bottle at Hamburg's Sternschanze station. Police arrested one suspect and are investigating for dangerous bodily harm.
In the afternoon an argument broke out between the man and four other people. He was threatened with a glass bottle that broke during the attack and caused his injuries.
The injured man was taken to hospital. His condition is stable, police said. Three further suspects remain at large.
Investigations are underway for dangerous bodily harm.