Homicide Squad detectives are investigating the death of a man in Kwinana Beach.
Police and St John paramedics were called to Beach Street around 6.10pm on Thursday where they found the unresponsive and injured 56-year-old man in a carpark area.
He could not be revived and died at the scene.
Police believe he may have been involved in an altercation just before his death.
A man aged in his 50s, who is believed to be known to the victim, is assisting with the investigation.
Anyone with information regarding this incident, or who has mobile phone or dash-cam vision from the area around the time of the incident, is asked to call Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au.
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