Image caption The man was seen walking up West Street towards the clock tower

Detectives investigating the rape of a 19-year-old woman on Brighton beach last year are making an appeal on Crimewatch.

Police want to trace a man seen on CCTV who was near the scene of the attack last September within about 20 minutes of it taking place.

The woman, from Kent, told officers she was raped by two men while a third looked on.

Sussex Police said the man seen on CCTV would be their second suspect.

Last year, a 28-year-old was arrested on suspicion of rape and bailed pending inquiries.

Two other men were also arrested last October but released with no further action to be taken against them.

Det Insp Ian Still said police needed to identify the man shown in the CCTV images and talk to him to eliminate him from their inquiries.

The CCTV shows the man going into a nightclub at about 22:30 GMT on 6 September, and then leaving the club to walk up West Street and into Duke Street early on 7 September.

Officers have previously said the victim left the same club in the early hours of 7 September and was attacked on the beach near the bottom of West Street.

Crimewatch is on BBC1 at 21:00 GMT on Thursday.