An e-fit image of a man police want to question about a serious sex offence on a young man at a Kent railway station was released today.

British Transport Police believed the man, who was dishevelled and carrying a red suitcase and two black bin bags, can help with investigations about the alleged incident at Folkestone West railway station on Friday February 8.

BTP Det Con Steve Best said: "The incident reportedly occurred just after 9am while the youth was attempting to exit the station toilets.

"Police are looking for a white male aged in his 40s with a stocky build who was slightly dishevelled in appearance."

It is thought the man boarded the front carriage of the 0940 train to Ashford.

Contact British Transport Police on 0800 40 50 40 or the Witness Appeal Line on 0207 391 5275 quoting background log B6 of 22/04/08.