Police are appealing for information in tracing a man following an indecent exposure incident on a train earlier this year.
A man was spotted by a woman exposing himself and inappropriately touching himself on a c2c-line journey between Dagenham Dock and Barking stations, just after 7am on June 8.
The woman challenged the man, who then moved to another carriage.
Pc Gareth Jones of the British Transport Police said: “I am extremely keen on speaking with this man as I believe he has vital information which could help with the investigation.
“Everyone has the right to travel on the transport network without feeling uncomfortable, intimidated or in fear.”
Anyone with information should contact British Transport Police on 0800 40 50 40 or text officers on 61016, quoting reference number E-SUB/B4 of 24/11/15.
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