Police want to speak to a woman (pictured) in connection with a missing bag containing £999 of charity money.
A spokesman for British Transport Police said the bag went missing on a train travelling from Horsham to London Bridge at around 4.30pm on Tuesday (March 17).
Detective Constable Vanessa Cottington said: “A worker for the charity Furni-Aid left a bag containing donations, which he was taking to the bank, on the train.
“He only realised he had forgotten the bag after alighting the train at Crawley, and reported it immediately.”
Crawley Furni-Aid collects and delivers furniture to people in need in Crawley and Horsham areas.
The train guard was contacted and a search carried out, but the bag was not found.
After viewing CCTV from the train they are issuing an image of a woman who left the train at Horley who they believe has information about the incident.
DC Cottington said: “This money was intended for a charity which provides needy people with furniture, so it is important we do everything possible to recover it.
“I think the woman in the image can help us with our investigation. Please let us know who she is.”
Anyone with information is asked to contact British Transport Police on 0800 40 50 40, or text 61016, quoting reference SSUB.B14 of 13/04/2015. Information can also be passed anonymously to the independent charity Crimestoppers on 0800 555 111.