A teenager who groped a woman’s bottom as he rode past her on his bike may be responsible for targeting three other women.

Extra officers are patrolling in the Town Walk East area, around the tunnel under the railway line, where the man has carried out three assaults in the past month.

Each time he rode up behind his victim, assaulted her and cycled off.

The suspect is white, aged about 17, of average build, with short, light brown or blond hair. He was wearing a black shirt, black trousers and black shoes. Call 08458 505505 or Crimestoppers anonymously on 0800 555111.