Police are hoping Lichfield passengers can help them identify a man who spat at a female train worker.
The incident happened on a London Midland service shortly after 1pm on May 5.
The London Euston-bound train had called at Lichfield Trent Valley before the man got on at Tamworth.
PC James Lynch said: “He became involved in a dispute over a ticketing matter with the train manager as she checked tickets on the train.
“As a result of the dispute, the train manager asked the man to leave at the next stop, Atherstone.
“He became extremely abusive and also spat at her, before leaving the train at Atherstone.
“Since the incident, enquiries have been ongoing to trace the man responsible but to no avail.
“I am now releasing CCTV images and appealing for anyone who knows the identity of this man to come forward.”
Anyone with information is asked to call British Transport Police on Freefone 0800 40 50 40, or text 6106, quoting reference B9/WWA of 04/07/13. Alternatively, they can call Crimestoppers anonymously on 0800 555 111.
