British Transport Police (BTP) detectives have launched an investigation after a member of rail staff was punched in the face on the 2.53pm Victoria to Ramsgate service on Monday 18th February.
Investigators have released CCTV images of a man they would like to speak to after the incident, which took place around 4.30pm.
Detective Constable Bob Gee, leading the investigation,told SFM News: "A man got on at Faversham station and approached the ticket inspector to purchase a ticket to Herne Bay.
"The man became irate after his card was declined at the first attempt to take payment. When the payment went through on the second try, unprovoked, the man suddenly became violent, and punched the ticket inspector in the face, leaving him with a cracked cheekbone. I'd like to appeal to the passengers who witnessed the incident to come forward as they may have information crucial to our investigation."
Officers are currently conducting an in-dept investigation into the incident in a bid to catch the man responsible. This has included viewing CCTV from the station working through forensic opportunities and speaking with witnesses. Images have also been circulated to other forces and on police intelligence systems.
DC Gee continued, "This was an unprovoked attack on a man who was simply trying to do his job. As a result of being punched, he is currently receiving treatment, including facial surgery, for his injuries. If you recognise the man pictured, if you saw the incident take place, or if you are the man himself, we urge you to come forward and speak to us."
Anyone with any informationon this incident is asked to call the British Transport Police on 0800 40 50 40 quoting reference B2/LS of 28/2/13. Alternatively, they can contact Crimestoppers free (from any landline) and anonymously on 0800 555 111.