Transport police have released CCTV images of a woman they want to speak to after an assault on a train.
The incident happened on a ScotRail service from Dalmuir in West Dunbartonshire to Motherwell in North Lanarkshire at around 11.03pm on Saturday, December 21 last year.
The attack occurred as the train passed between Dalmuir and Carmyle railway station in Glasgow.
A British Transport Police (BTP) spokesperson said: “Police believe the woman in the images may have information that can help their investigation.”
If you have any information, call BTP on 0800 40 50 40 or Crimestoppers anonymously on 0800 555 111.