A TEENAGER was the victim of a serious sex attack in Tredegar, police say.

The attack on the 18-year-old happened in Gainsborough Road in the Cefn Golau area of Tredegar sometime between midnight and 4am yesterday.

The attacker is described as being a white man in his early twenties, with brown hair which is very short at the sides and longer on top, of a medium build and height but with muscular arms.

He wore a light blue hooded top with red writing on it, dark trousers and white trainers.

Officers particularly want to trace a group of four or more people who were seen together in Gainsborough Road at approximately 3am yesterday who may have seen the offender or have vital information that could assist the investigation.

Anyone with any information is asked to contact Gwent Police on 101 or Crimestoppers on 0800 555 111.