14-year-old boy has been assaulted in William Street in Northampton.
The incident took place between 9pm and 10pm on Wednesday 23 July when the teenager was approached by the offender who punched him in the face in an unprovoked attack.
The offender also made a racist remark to the victim.
The victim suffered a split lip in the attack, which police are treating as racially aggravated.
The offender is described as Asian, of stocky build with black short hair.
Witnesses to this incident, or anyone with information, should call Northamptonshire police on 08453 700700 - alternatively, information can be given anonymously to Crimestoppers on 0800 555111.