A topless man wearing gold trousers made sexual advances to a young woman during a rail journey between Glasgow and Neilston on Wednesday.
Now British Transport Police are appealing for witnesses to the alleged incidents on the 8.05pm service, which passes through the south side and Eastwood en route to Neilston.
The man is said to have threatened and disturbed other passengers while playing loud music, before making advances to the 20-year-old woman, verbally abusing her and swearing.
He is white, in his 40’s with multi-coloured hair, and is said to be often seen on this stretch of line playing music from a boom box.
Anyone with any information is asked to get in touch by sending a text to 61016 or calling 0800 40 50 40 quoting reference 594 of 09/08/2017. Alternatively, ring Crimestoppers anonymously on 0800 555 111.