20 October 2013, 12:21 | Updated: 20 October 2013, 13:08
Police are investigating what they're calling a 'serious assault' on a 19 year old woman in Kettering.
The attack happened on Montagu Street in the town centre in the early hours of Sunday 20 October 2013.
The street was closed off during the morning while investigations were carried out.
Northamptonshire Police said they were looking for a man in his twenties, seen wearing a red top and dark trousers. He was between 5ft 10in and 6ft tall.
Police say there were a lot of people who would have been coming out of pubs and clubs at the time the attack took place, and these may have vital information.
Anyone with information can call Northamptonshire Police on 101 or call Crimestoppers anonymously on 0800 555 111.