It happened in Bullamoor Park at around 9pm on Friday (11 November 2022).
It was reported that the victim, a teenage girl, was knocked to the ground and repeatedly kicked by three other teenage girls.
The victim suffered bruising to her head, face and body and has been left shocked by the ordeal.
A video of the incident was posted on social media which has since been taken down.
Two 15-year-old girls and a 13-year-old girl have been arrested, questioned and released on conditional bail while enquiries continue.
It is believed there was a large gathering of youths in the park when the incident occurred.
We are urging people to come forward with any information, photos or video footage to support the investigation.
If you can help, please make a report via the North Yorkshire Police website or by calling 101.
If you would refer to remain anonymous, contact Crimestoppers on 0800 555111 or make an online report.
Please quote reference number 12220200724 when providing details.
Reassurance patrols have been stepped up in the area while the investigation is ongoing.
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