Lincolnshire Police are looking for witnesses of a reported assault on Tritton Road in Lincoln.
The attack happened at around 8pm on Friday, October 28 in the Matalan car park.
Police say two men, believed to be in their mid-30s, physically attacked a 17-year-old boy causing facial injuries.
The two suspects left the scene in a dark red old-style hatchback – possibly a Peugeot.
One of the suspects is believed to be 6ft tall and of a slim build. Anyone with information is asked to call 101 quoting incident 485 of October 30.