Mandurah Police are calling on the public's help as they continue to investigate the assault of a man in Erskine.
The victim, a man in his 30s, was walking his dog along Sticks Boulevard around 4.20pm on August 11, when he was approached by two men on Harley Davidson motorcycles.
"The motorcycles were left in the middle of the road during the assault, causing traffic to bank up," a WA Police spokesperson said.
"The victim was conveyed by ambulance to Peel Health Campus for medical treatment."
Investigators believe a number of witnesses in the area may be able to assist with the investigation.
Detectives are seeking dashcam footage of Sticks Boulevard and the surrounding area between 4.40pm and 5pm.
Anyone with information or vision relating to this incident is urged to contact Crime Stoppers on 1800 333 000 or report on www.crimestopperswa.com.au.
Mission Australia celebrates 25 years of supporting young people through Mandurah Reconnect program
'Mad Eagles fan' wins $6 million Lotto prize
Mandurah woman loses everything in house fire
Gift card scams surge past $1 million prompting urgent warning from Consumer Protection
Secret Harbour by-election attracts record 16 candidates
Major party candidates locked-in for looming Secret Harbour by-election
Comet Bay Primary to offer full-time kindy from 2027
North Dandalup crash claims life of driver
Date set for Mandurah's Town Ward Extraordinary Election