A train guard was threatened by a thug wielding a stun device.

The incident happened as the guard challenged a man for not having a valid ticket as a train pulled into Marden Railway Station.

The thug then pulled out a device and arced it at the guard in a threatening manner.

The train departed Marden with the suspect boarding a later service which went to Ashford International.

Officers believe in the CCTV image may have information which could help them investigate the incident.

The incident happened at 8.44pm on Wednesday, November 13, but details have only just been released by police.

Officers investigating are appealing for information and would like to know who the man is.

If you know who he is, contact BTP by sending a text to 61016 or by calling 0800 405040 quoting reference 537 of 13/11/2019, or call Crimestoppers anonymously on 0800 555111.

To get the latest updates on ongoing cases, police appeals and criminals put behind bars, click here.

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