British Transport Police have released a CCTV image of a man they want to speak to in connection with an incident of outraging public decency and harassing a young girl on a train journey to Whitland.
A man is alleged to have acted in an inappropriate manner in front of a the girl who was on her way to school on September 10, at 7.30am.
Officers said she kept on trying to escape the man by moving seats. But he continued to follow her through the train carriage until he jumped off the train at Whitland railway station.
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A spokesman for British Transport Police said: "A man is reported to have acted inappropriately in front of a young girl travelling to school at around 7.30am on 10 September. Despite the girl moving seats several times, the man continued to follow her until he alighted at Whitland railway station.
"Officers believe the man in the CCTV image may have information which could help their investigation.
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Anyone with information about the man should get in touch with British Transport Police by texting 61016 or by calling 0800 40 50 40 quoting reference 2000063805.
People can also call Crimestoppers anonymously on 0800 555 111.