The attack took place at Manchester Victoria station
Counter terror police are leading an investigation into a knife attack at Manchester Victoria on New Year's Eve.
The incident is not ongoing and police do not believe there is a wider threat to the public.
Three people were stabbed, including a British transport police officer.
The attack took place at around 9pm in the train station and a taser was fired at the attacker. However, it missed and pepper spray was used to subdue him.
All three of the victims, including a man and woman in their 50s, were taken to hospital in a "serious" but not life-threatening. The police officer, who was stabbed in the shoulder, left hospital this morning. The other two people both suffered stab wounds to their stomachs and the woman to her face as well.
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Sam Clack, a BBC producer, was at Manchester Victoria at the time of the attack.
He said: "I just heard this most blood curdling scream and looked down the platform.
"What it looked like was a guy in his 60s with a woman of similar age and another guy all dressed in black.
"It looked like they were having a fight, but she was screaming in this blood curdling way. I saw police in high-vis come towards him. He came towards me.
"I looked down and saw he had a kitchen knife with a black handle with a good, 12-inch blade. It was just fear, pure fear."
Greater Manchester Police's assistant chief constable Rob Potts said: "Tonight's events will have understandably worried people.
"But I need to stress that the incident is not ongoing, a man is in custody and there is currently no intelligence to suggest that there is any wider threat at this time.
"While we don't know yet the full circumstances and are keeping an open mind, officers from counter terrorism policing North West are leading on the investigation.
"This is to ensure we have all the expertise available to us and progress our investigation as soon as we possibly can.
"There will be closures in place at the station for some time."
