British Transport Police have release a CCTV image of a woman they want to speak to about a phone theft on a Preston-bound train near Lancaster.
The incident happened on October 23, at about 10.40am as the Virgin express travelled south from Oxenholme.
PC Michelle Johnson said: “A member of staff briefly left a mobile phone on a seat in a carriage of the train. When they returned the phone had been taken.
“The woman in the image may have information about the theft – but who is she?”
Call BTP on 0800 40 50 40 or Crimestoppers at 0800 555 111.