Two men have been arrested by armed officers after multiple people were stabbed on a train.
The train was stopped at Huntingdon, in Cambridgeshire, after police were called at around 7.40pm on Saturday.
Cambridgeshire Police said a number of people have been taken to hospital.
London North Eastern Railway, which operates East Coast Mainline services in the UK, said all lines are blocked around Huntingdon station, with major disruption expected until the end of the day.
Police said the A1307 has been closed on the approach to the town centre and the incident remains ongoing.
Cambridgeshire Police said in a statement: “We were called at 7.39pm with reports that multiple people had been stabbed on a train.
“Armed officers attended and the train was stopped at Huntingdon, where two men were arrested.
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“A number of people have been taken to hospital.
“The incident remains ongoing and the A1307 has been closed as you approach the town centre.”
Huntingdon MP Ben Obese-Jecty said in a post on X he was “aware of the incident” and “trying to establish further information”.
“My thoughts are with the victims and those involved,” he wrote.
He praised the incredible response from the emergency services, with police, firefighters and ambulance crews “here, en masse”.
Shadow Home Secretary Chris Philp said on X: “Horrific scenes in Huntingdon, in what seems to be a brutal mass attack by two perpetrators.
“My thoughts are with all those injured or affected and the emergency services responding The police and government should provide an update on what happened and who has been arrested as soon as possible
Tory party chairman Kevin Hollinrake also described the scenes as “horrifying”.
“My thoughts are with the victims and the emergency services responding to this incident,” he wrote on X.
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