Police are trying to trace a teenage boy amid concern he was seriously injured in a disturbance on a Tube train .
He was seen staggering away from Kensal Green station and clutching his chest after getting off a southbound Bakerloo line train at around 2.50pm on Monday (October 16).
British Transport Police (BTP) is asking witnesses to contact officers immediately.
Police say there was a disturbance between the boy, believed to be aged in his teens, and two other men.
When the train pulled into the station witnesses reported seeing a young man run away from the scene clutching his chest.
It is believed he may be injured as a result of the altercation.
Officers are now keen to trace the boy to make sure he has not suffered a serious injury.
Anyone who was on the train and witnessed what happened can call BTP on 0800 40 50 40 quoting reference 291 of 16/10/2017.
BTP can also be reached on text at 61016.
You can also call Crimestoppers anonymously on 0800 555 111.
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