A man in his 70s has died in Joondalup Hospital after contracting COVID-19.
Premier Mark McGowan said the man was not vaccinated and had underlying health conditions.
"I'm advised that WA Health has no record of the man receiving a COVID-19 vaccination," he said.
"The man has been admitted to hospital after acquiring the virus in the community."
WA Health said the death is not connected to the Juniper Aged Care outbreak.
It is the second death of a Western Australian who acquired the virus locally since the start of the pandemic.
WA recorded 51 new local cases overnight.
Some of the new local cases were infectious in the community.
Mandurah Crab Fest boasts huge range of free, family friendly entertainment
Fuel prices surge in Perth, Mandurah
Teen boys charged over Mandurah burglaries
Tragic update in search for missing man Robert Snyder
Premier Roger Cook to leave Kwinana electorate, move to Perth
Mandurah Marine Rescue's new vessel named in memory of nun who survived 1959 boating accident
Teen dies in motorbike crash at Waroona Dam
Shark alert issued after whale carcass reported at Preston Beach
Kwinana businesses to refuse serving students during school hours