A train station in Frankfurt, Germany, was the scene of a bloody knife attack late Saturday afternoon.

At about 5:40 p.m. local time, four young males aged 16 to 18 were injured after some kind of argument, Hessenschau reports. The attacker is still on the run, and his identity is unknown.

After the attack, there was more news of trouble on German trains, when two passengers on a train between Hauptwache and Taunusanlage got into a conflict and ended up injuring five other people on the train by breaking a window.

These stories come as there is increased concern about rising crime in Germany — specifically migrant crime. A German police report released earlier this year tied 69,000 planned or completed crimes in just three months to migrants.

The story is still developing.

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