Bradley Robert Edwards has been found guilty beyond reasonable doubt of the wilful murder of Jane Rimmer and Ciara Glennon.
He was found not guilty of the murder of Sarah Spiers - the first woman who went missing in 1996.
Her body has never been found.
Edwards will be remanded in custody until December 23, when he will receive his sentencing.
Date set for Mandurah's Town Ward Extraordinary Election
A date has been set for Mandurah's upcoming Extraordinary Election which will see the appointment of a new Town Ward councillor.
Elderly North Pinjarra woman hands over $10k cash to scammers
Mandurah Detectives are looking for a man who was allegedly involved in a scam targeting an 89-year-old North Pinjarra resident.
'Gale' the whale heads back to sea after 19 days in Peel-Harvey Estuary
A southern right whale has finally made its way back out to sea after spending 19 days in the Peel-Harvey Estuary.
Secret Harbour by-election: Former Rockingham councillor Craig Buchanan endorsed as Legalise Cannabis WA Party candidate
A new candidate for the Secret Harbour by-election has been announced with former Rockingham councillor Dr Craig Buchanan endorsed as the Legalise Cannabis WA Party candidate.
Gang of youths remain on run after Warnbro servo break-in
Police are continuing their hunt for a group of youths who broke into a Warnbro service station.
Mandurah flooded as rainfall total tops state
Mandurah has copped an absolute drenching overnight, recording the largest rainfall total in the state.
Aerial firefighter loses Serpentine home in devastating blaze
An aerial firefighter who spent a decade protecting properties and people has lost his own home in a devastating fire.
Rumours Rockingham councillor Ryan Robertson to be announced as Liberal candidate for Secret Harbour by-election
A City of Rockingham councillor is set to be announced as the Liberal Party candidate for the Secret Harbour by-election.
Baldivis man fined for throwing ex-wife's elderly dog
A Baldivis man who threw a dog so hard it broke its femur and had to be put down has been fined $3000 and banned from owning an animal for two years.