Police are investigating an assault on a man in Brighton last month (September, 28).
The victim, a 20-year-old local man, suffered serious facial injuries following the attack at 5am in Bond Street.
A 21-year-old man from Brighton was arrested on suspicion of assault and released under investigation.
Officers are keen to hear from two passers-by who appear to have witnessed the incident.
One was wearing a hi-vis jacket and hard hat.
The other was a young man wearing a black and white puffa jacket or anorak.
Anyone with any information is asked to report it online here or call 101, quoting serial 163 of 28/09.