During a dispute in an apartment on Johannisthaler Chaussee in Gropiusstadt, a 54-year-old is said to have attacked a 57-year-old with a knife. He then called 911 himself.

The woman was seriously injured in the neck and back by her friend in the attack on Saturday evening at around 9:30 p.m., the police said on Sunday. But her life is not in danger.

The homeless suspect then dialed the emergency number himself and was arrested without resistance.

After he was treated by the police and blood was drawn from him, he is still in police custody. The investigations are ongoing.