The offender is described as a white boy, aged between 14 and 15 years old with blond hair.
He was wearing a grey tracksuit.
Anyone who saw the incident or could help to identify the offender is asked to contact police.
Officers investigating an assault in Cheshunt are appealing for information and witnesses.
At around 8.30am on Friday, May 11, the victim – a 14 year old girl – was walking along Penton Drive when a boy bumped into her. She asked him to mind his step. The boy then punched her causing swelling to her forehead.
The offender is described as being white, aged between 14 and 15 years old with blond hair. He was wearing a grey tracksuit.
Anyone who saw the incident or has information that could help the investigation is asked to contact PC Steve Tredgett by emailing email@example.com, calling the non-emergency number 101, quoting crime reference K2/18/2219, or report information online.
Alternatively, you can contact the independent crime-fighting charity Crimestoppers anonymously on 0800 555 111 or through their Anonymous Online Form. No personal details are taken, information cannot be traced or recorded and you will never need to go to court.