Nine of those injured are said to have suffered life-threatening injuries in the attack on Saturday night, when armed police stormed the train at Huntingdon station in Cambridgeshire, eastern England, to make two arrests
A man with a large knife is believed to have been shot by an officer with a taser shock-gun after what is being described as a bloody rampage on the train after it left nearby Peterborough station
"Ten people have been taken to hospital following a multiple stabbing on a train in Cambridgeshire," the British Transport Police (BTP) said in a statement on Sunday
"Nine are believed to have suffered life-threatening injuries. A major incident has been declared and Counter-Terrorism Policing are supporting our investigation," the statement said
The London-bound high-speed train had been travelling between Doncaster and was headed to King's Cross station in the UK capital
Earlier, the Cambridgeshire Constabulary said its officers are working with BTP after they intercepted a train in Huntingdon and the injured were taken to hospital
"We were called at 7.39 pm (local time on Saturday) with reports that multiple people had been stabbed on a train," Cambridgeshire Constabulary said in a statement
"Armed officers attended, and the train was stopped at Huntingdon, where two men were arrested. A number of people have been taken to the hospital," the police said
British Prime Minister Keir Starmer took to social media to condemn the "appalling incident" and urged people to follow police advice

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