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New details have emerged about the the suspect in the mass stabbing on a train in Cambridgeshire. Ten people were taken to hospital following the attack on the 6.25pm rail service from Doncaster to London King's Cross on Saturday (November 1). British Transport Police declared a major incident when the train came to a stop in Huntingdon after passengers pulled the emergency alarms and two men were arrested eight minutes after police were called at 7.42pm. A 32-year-old British national remains in custody on suspicion of attempted murder. He is from Peterborough and boarded the train there when it stopped at 7.30pm, officers said. Five people have been discharged from hospital now, but a train crew member who was injured trying to protect passengers remains. in a critical but stable condition Speaking on Times Radio this morning (November 3), transport secretary Heidi Alexander also revealed new details about the suspect. Join the Manchester Evening News WhatsApp group HERE She said: "I’m not going to speculate about his motivations or the events that led up to the incident." She added: "What I can tell you is that he was not known to counter-terrorism police, he was not known to the security services, and he was not known to the Prevent programme." Asked if the suspect was known to mental health services, she said: "I’m not in a position to share any more information about the individual, I’m afraid." Ms Alexander also said that a member of the train crew injured while trying to protect passengers is in a “critical but stable” condition. She said: "There are five people still in hospital, one of whom is the member of train crew… who this morning is in a critical but stable condition. "Some of the other people who had been taken to hospital on Saturday night have now been discharged." British Transport Police Deputy Chief Constable Stuart Cundy said CCTV from the train showed the worker's actions “were nothing short of heroic and undoubtedly saved people’s lives”. Mr Cundy said: “This was a horrific attack that has had a wide impact. “My thoughts and those of everyone in British Transport Police are with those injured and their families – especially the brave member of rail staff whose family are being supported by specialist officers.” A knife was recovered by police at the scene of the incident, which police have said is not believed to have been motivated by terrorism. David Horne, managing director of LNER, said “our thoughts and prayers are with everyone affected, particularly our colleague who remains in a life-threatening condition, and their family”. “I would also like to recognise the driver, crew and our operational response colleagues for their bravery and quick actions,” he said. Train driver Andrew Johnson, who is reported to be a Royal Navy veteran, is said to have got signallers to divert the train to a different track, allowing him to stop at a platform at Huntingdon which was not a planned stop on the route. He told ITV News: “I was only doing my job. It was my colleague who is in hospital who was the brave one.”