A woman has been arrested after 17 people were reportedly injured in a stabbing at Hamburg's central train station in Germany.
An attacker armed with a knife targeted people on the platform between tracks 13 and 14, according to police.
They said the suspect was a 39-year-old woman, and the German national was arrested at the scene without offering resistance.
Officers said they "believe she acted alone" and investigations into the stabbing are continuing. A knife has also been recovered.
There was no immediate indication of any possible motive.
Investigators were looking into whether the suspect may have been mentally ill, police spokesperson Florian Abbenseth said.
The fire service said four of the injured were in a life-threatening condition, six others were seriously hurt, and another seven sustained minor injuries, news agency dpa reported.
The attack happened shortly after 6pm local time (5pm UK time) on Friday in front of a waiting train, regional public broadcaster NDR reported.
A high-speed ICE train with its doors open could be seen at the platform after the incident.
Railway operator Deutsche Bahn said it was "deeply shocked" by what had happened.
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Four tracks at the station were closed in the evening, and some long-distance trains were delayed or diverted.
Hamburg is Germany's second biggest city, with the train station being a hub for local, regional and long-distance trains.
(c) Sky News 2025: '17 people' injured in stabbing at Hamburg train station - as woman arrested
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