A teenage Lincoln girl suffered a cut to her forehead after being pushed from behind and kicked on Boultham Park Road.
The 15-year-old girl was walking past the park on Boultham Park Road, near to the park, on the evening of Friday, June 20 when she was attacked from behind.
It is thought there may have been one or a few offenders who carried out the incident who were around her age.
Police say the victim was left with a cut to her forehead and very upset as a result.
Officers would like to hear from anyone who may have any information relating to the incident or may have witnessed it taking place.
Anyone with any information is asked to contact Lincolnshire Police on 101 quoting incident 512 of Friday, June 20, 2014.
Alternatively, they can contact the independent charity Crimestoppers anonymously on 0800 555 111.