British Transport Police (BTP) investigating a sexual assault on board a train between Birmingham New Street and Derby are appealing for more information.
The incident happened between 5.30pm and 6.10pm on board the 5.30pm Cross County Service from Birmingham on Thursday 3 January.
A man is reported to have approached a woman, touched her repeatedly and asked her for sex.
The man is described as tanned, 5ft 7, with a slim build and short black hair which was slicked on top. He was wearing a black coat and black jeans and carrying a grey suitcase. He spoke with a Birmingham accent.
Anyone who has more information about the incident is asked to contact BTP by texting 61016 or calling 0800 40 50 40, quoting reference number 432 of 03/01/19.
Alternatively you can call Crimestoppers anonymously on 0800 555 111