A gang of teenagers wearing hooded tops were involved in a mass brawl in Northampton on Saturday night.
The incident happened just after midnight when a group of about 10 young people aged between 15 and 17, started fighting in Birchfield Road East in Abington.
A police spokesman said at least one person was injured during the affray and required medical attention.
Anyone who witnessed the incident, or anyone with any information about those involved, is asked to contact Northamptonshire Police on 101. Alternatively, information can be given anonymously to Crimestoppers on 0800 555 111.