CCTV images have been released following an incident on board a train.
The train service was travelling between Pollokshaws West and Thornliebank stations on July 13, 2023 when the incident occurred.
Now, British Transport Police officers are keen to speak to the man pictured in the images.
He is described as being Asian, around 30 years of age and about 5 ft 7 inches tall.
The man had dark wavy hair with a short ponytail. He was wearing a pink t-shirt and carrying a white plastic bag.
Officers believe the man may have information that could assist with their ongoing probe.
They are pleading with any members of the public who may recognize him to get in touch.
British Transport Police can be contacted on 0800 405040 or by text 61016 quoting reference: 2300081173.
Information can also be given anonymously via Crimestoppers on 0800 555111.
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