A woman has been left extremely distressed after a man sat opposite her on a train in south London exposed himself and started masturbating.
Detectives have released a picture of a man in connection to the indecent exposure incident, which took place on a Thameslink service between Tooting and Herne Hill at around 11.15pm on February 6.
The victim was extremely distressed and left her seat to report what had happened, police say.
Anyone who recognises the man pictured has been asked to contact police by texting 61016, or by calling 0800 40 50 40 quoting reference 808 of 6 February.
Information can also be given anonymously to Crimestoppers on 0800 555 111.
