SUMMARY Emergency services have been called after "multiple people" were stabbed on a train travelling in Cambridgeshire Two people have been arrested, Cambridgeshire Police say - pictures show them responding to the scene at Huntingdon station There are no fatalities, but ten people are in hospital - with nine believed to have life-threatening injuries - according to British Transport Police The train involved was the 18:25 service from Doncaster to London King's Cross An eyewitness told the BBC they saw a man bolting down the carriage with a bloody arm, saying "they've got a knife, run", and a man collapsed...