Emergency companies have arrived on the scene of a knife assault on a prepare touring in Cambridgeshire at Huntingdon prepare station.
Police will be seen operating on the platform alongside the stopped prepare, whereas a number of ambulances arrive on the station.
Authorities later confirmed that 10 individuals had been taken to hospital, 9 of whom had been reported to be in life-threatening situation.
Two individuals have been arrested and counter-terrorism officers have joined the investigation, Cambridgeshire Police stated.
With inputs from BBC