A teenager was allegedly beaten with a baseball bat during an assault in Northampton.
The alleged incident happened in St James Mill Road East, next to the St James Retail Park, at about 12.20pm on Saturday, December 19.
Officers investigating the case have appealed to anyone who was in the area, or who saw anything unusual at the time, to contact them.
Witnesses, or anyone who knows anything about this incident can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.