We are investigating reports of an assault, which took place in Chepstow Road, Newport, and left a man with serious injuries.
The offence happened at approximately 9.20pm on Saturday, 22nd December 2018, outside the Sen BBQ premises.
A man was knocked unconscious by an unknown male, who then left the scene.
Officers are now appealing for information to identify the man pictured in this CCTV image. He was in the area at the time of the incident, and we believe he could help with our enquiries.
If you know the identity of the man in the picture or witnesses the events of that evening, please call Gwent Police on 101, quoting log 562 of 22/12/18, or contact Crimestoppers anonymously on 0800 555 111. Members of the public can also direct message us on Facebook or Twitter.