‘People hid in toilets’: Passengers thought stabbing was Halloween prank; how attack unfolded on London-bound train

{}A terrifying knife attack on a Saturday evening train from Doncaster to London near Huntingdon left ten people injured, nine critically. The incident, declared a major incident, has prompted a counter-terror investigation. Passengers described scenes of panic as armed officers boarded the train, arresting two suspects. Authorities are working to establish the motive behind the horrific event.