On Wednesday 19th May, around 5:15 pm, the victim was approached by a man who threatened him with violence or to hand over his personal items.
The boy gave him his bag and the man left the train at Anderston Station.
The man is described as white, in his early 20s, medium build, ginger hair and beard, and was wearing a white Tommy Hilfiger t-shirt and grey joggers at the time of the incident.
The train service was extremely busy at the time of the robbery and officers are keen to speak to anyone who saw anything.
Witnesses or anyone with information can contact BTP by texting 61016 or calling 0800 40 50 40 quoting 492 of 19/05/21.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.
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