Officers are appealing for witnesses following a sexual assault against a man on a train in the South Wales valleys.
The incident happened at around 12.50pm on Saturday 1 July on the Aberdare to Cardiff Central service, between Penrhiwceiber station and Abercynon station.
The victim walked past a group of people. A man within the group made lewd comments towards him, before sexually assaulting him then making light of the incident,
British Transport Police were called and met the train at Abercynon station and arrested a 40-year-old man in connection to the assault. The man is currently on bail as officers continue their investigation.
Officer would like to hear from anyone who was witness to the assault or has any information that would assist their enquiries.
Anyone with information is asked to contact BTP by texting 61016, or by calling 0800 40 50 40 quoting reference number 2300075449.
Alternatively, call Crimestoppers anonymously on 0800 555 111.
