Bunbury Detectives are seeking information regarding a serious assault that occurred in Millbridge on Sunday.
At around 12.30am, an 18-year-old man was assaulted by an unknown man outside a residence on Apsley Circle.
The victim received a broken jaw and was conveyed from Bunbury Hospital to Fiona Stanley Hospital for surgery.
Several people were in the area at the time and detectives wish to speak to anyone who saw the assault.
Anyone who was in the area around the above time, who has dash-cam footage, or CCTV from their homes, is urged to come forward.
Anyone with information relating to this incident is asked to call Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au.