Police have released images of a man they want to identify after a man exposed himself on a train and masturbated in front of a passenger.
The incident happened around 6.30am on Friday, May 22, on a southbound service to East Croydon.
The man boarded the train at Clapham Junction and got off at East Croydon.
British Transport Police said he began masturbating in front of a woman after exposing himself to her.
Anyone who recognises the man is asked to contact British Transport Police.
In a statement, a British Transport Police spokesperson said: "Officers investigating an incident during which a man masturbated in front of a woman on board a train are releasing these images in connection.
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"At around 6.30am on Friday 22 May, a man exposed himself to a woman on a southbound train to East Croydon.
"She moved away but he then came up to her and began masturbating.
"The man boarded the service at Clapham Junction and left at East Croydon station.
"Detectives would like to speak to the man in the images, as they believe may have information that could help their investigation."
