Police are hunting for a man after three passengers on a train between Lancaster and Preston were racially abused.
The incident happened between 10.40am and 11am on Tuesday, 16 July, as the passengers travelled on a train bound for Glasgow.
PC Allan Fernie, of British Transport Police, said: “The three men, who are all Asian, were travelling to Glasgow and were minding their own business when they were targeted by a fellow passenger.
“The man initially engaged the victims in conversation, but then began to racially abuse them and then threatened them – making a gesture as if to slit their throats.
“Investigations to date have revealed the abusive man boarded the train at Preston and left the service at Lancaster.
“I have also managed to isolate the image of a man I believe has vital information in relation to the offence and am calling on the public to help identify him. Everyone should have the right to travel on the railway without encountering abuse, violence or hatred in any form.”
Contact British Transport Police on 0800 40 50 40, quoting log number B8/NWA of 5/9/13, or Crimestoppers, anonymously, on 0800 555 111 with information.