Police investigating the sexual assault of a 15-year-old girl in a group attack in Northamptonshire believe they know the first names of two people involved.
The victim was walking along Corby's Oakley Road on 2 October when three men and a woman surrounded her in a tunnel under the railway.
Two men sexually assaulted the girl before she managed to get away.
Police said the woman may be called be Lynette and one of the men could be Aaron.
The woman is aged 22 to 23, and is described as quite thin and about 5ft 8in (1.73m) to 5ft 9in (1.75m).
She had short black hair in a bob style and was wearing black knee high boots, blue skinny jeans and a black leather biker style jacket. She was carrying a Primark bag.
The man believed to be called Aaron is aged 20 to 25, about 5ft 4in (1.62m), thin, with bright blond spiky hair and brown eyes.
He was wearing dark blue jeans, a black Adidas tracksuit top and fluorescent pink and green striped gloves.
Another man is described as wearing dark blue Henley jeans, a white Henleys t-shirt and a dark Ed Hardy baseball cap.
The third man in the group was wearing a dark scarf across his face, a black hoody top, dark tracksuit bottoms and a baseball cap.