Perth Detectives are seeking assistance from the public regarding a serious assault that occurred in Northbridge on Saturday 23 April 2016.
About 12.20am an altercation occurred outside a nightclub on Roe Street between a group of approximately 10 people.
As a result of the incident the victim, a 25 year old man from Ellenbrook, was taken to Royal Perth Hospital with facial injuries.
Police have released CCTV images of four men who they believe can assist them with their inquiries into this incident.
If you know the identity of these persons or have any information about this offence make a report online at crimestopperswa.com.au or call Crime Stoppers on 1800 333 000, where all calls are strictly confidential, and rewards are offered.