POLICE are looking to trace a weapon-wielding man who threatened passengers on board a Glasgow train.

The incident took place on board a train between Glasgow Queen Street and Helensburgh Central stations at 7.33pm on Friday, December 14.

British Transport Police said the man is reported to have brandished a weapon and threatened passengers.

The suspect then left the train at Helensburgh Central station.

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The same man was later seen on a train between Dumbarton Central and Balloch stations.

He was last seen walking in the direction of Station Road towards Back Street, Renton.

Officers believe the man shown in this CCTV image may have information which could help their investigation.

Anyone who recognises the man, or who has more information about the incident, is asked to contact BTP by texting 61016 or calling 0800 40 50 40, quoting reference number 592 of 14/12/18.