Police have released images of a man who performed an indecent act on a south London train.
The incident occurred on a District Line train between Wimbledon and East Putney between 5.10pm and 5.40pm on Tuesday April 14.
The man was seen by other passengers exposing himself and performing the act in full view.
Detectives are investigating the incident and would like to speak to the man in the images, as they believe he may have information that could help their investigation.
Anyone who recognises the man has been urged to contact British Transport Police by texting 61016 or by calling 0800 40 50 40, quoting reference 451 of 14 April.
Information can also be given anonymously to Crimestoppers on 0800 555 111.
