British Transport Police officers are investigating reports of a man masturbating on a train between Birkenhead Central and Rock Ferry.
BTP has released this image of a man in connection with the incident that happened at around 7.40pm on Friday, 22 December.
Officers would like to speak to the man in the image as they believe he may have information that could help their investigation.
Anyone who recognises him is asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 550 of 22 December 2023.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.