Officers are appealing for information following an assault in Lichfield.
The incident took place on Friday 5 August at around 11.50pm, near The Scales, on Market Place.
A 19-year-old boy was approached and assaulted following a brief argument.
He suffered serious facial injuries including a broken jaw.
The suspect is described as white, in his early 20s, around 5ft 8ins tall, slim build with dark short hair.
He was wearing a green and white camouflage pattern jacket.
Anyone with any information should message Staffordshire Police on Facebook or Twitter, quoting incident number 197 of 7 August, or call 101. Alternatively, contact Crimestoppers anonymously on 0800 555 111.