THIS is the man police are looking for after a sex attack in Southampton.

Police are trying to trace the man in connection with a sexual assault that happened in a flat in the Newtown area of Southampton.

The sexual assault took place on the morning of Tuesday, December 1, 2015, but police have been unable to identify him after conducting extensive enquiries and are now asking for the public's assistance.

The man is described as black, aged between 20 and 30-years-old, wearing dark clothing and carrying a dark rucksack.

Detective Inspector John McGonigle from the Western Investigations Team said: "We believe this man was with the victim prior to her being assaulted and may have information highly relevant to our investigation.

"We would urge him or anyone who knows him to contact us and assist us with our investigation. Please make contact via 101 in confidence quoting 44150416954."

People with information can also call Crimestoppers anonymously on 0800 555 111.