Police want to speak to a man in connection with an alleged incident involving someone weeing on a train in front of other passengers.
British Transport Police (BTP) received a report of a rail user outraging public decency on a train between Cardiff and Bridgend stations some time from 7.05pm and 7.15pm on Sunday, August 30.
Officers are investigating claims a man boarded a service at Cardiff Central station and urinated on the train carriage in full view of other people, before departing the service at Bridgend station.
Officers would like to speak to the man in the image who may have information that could help their investigation.
Anyone who knows him is asked to contact BTP by texting 61016 or by calling 0800 40 50 40.
In both cases, quote reference number 2000058879.
Alternatively, you can also call Crimestoppers anonymously on 0800 555 111.