Ten people have been injured in a stabbing attack on a train in the UK, which has been declared a “major incident” and led to counter-terrorism police joining the investigation on Sunday. 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 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.”