An incident occurred last year in November, and British Transport Police have released a CCTV image of a man who may be able to assist with the investigation.

The incident occurred on the 25th of November, around 6 pm, on board a train from Motherwell to Dalmuir.

Detectives have described the man in the image as black, with a beard and moustache, aged around 30 years old. He was wearing a grey beanie with over-ear headphones, black trousers and a black jacket.

They are prompting anyone who recognises the man to contact them by texting 61016 or by calling 0800 40 50 40, quoting reference 136 of 28 November.

As always, anonymous reports can be made via Crimestoppers on 0800 555 111.