Police have released a CCTV image of a man they want to trace over a sex attack on a Sheffield woman travelling on a train.
The 19-year-old victim was travelling between Leeds and Sheffield when she was assaulted.
PC Lee Marshall said: “A man sat close to her and tried to engage her in conversation.
“He then moved seats to sit opposite the victim and began to make suggestive comments to her, while rubbing his foot up and down her leg.
“Noticing the woman looked upset, a member of staff asked her to come to a different carriage.
“The woman got off the train at Sheffield.
“The man followed her off the train, grabbed her by the shoulders and made another suggestive remark.
“The victim then reported the incident to us, but the man had already left the station.
“We believe he may have travelled to Sheffield from Huddersfield. It is also possible he may have connections to the Derby area.
“Unwanted sexual behaviour on the rail network is unacceptable and we will do everything we can to find the man responsible for this incident.
“I believe the man in the image we are issuing today can help with our investigation.”
Anyone with any information about the incident onboard the 3.40pm Leeds to Sheffield train on August 23 should call British Transport Police on 0800 405040.