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.
Southern suburbs man claims $2.5 million Lotto win
A man who purchased a winning Lotto ticket in Bertram has come forward to claim his $2.5 million prize.
Wanted man possibly in Mandurah or Rockingham areas
Mandurah Detectives are asking for the public's help to locate a 27-year-old man who is wanted over an ongoing investigation.
Big fines for three fisherman caught with too many mullet, undersized crabs
Three men have been slapped with fines in the Mandurah Magistrates Court this week over separate fishing offences in the Peel region.
Brand new six-storey hospital to replace Peel Health Campus
The State Government's announcement of a new six-storey hospital in Mandurah has been welcomed by the community.
Drug and Firearm Squad swarm Meadow Springs home
The Drug and Firearm Squad have descended on a home in Meadow Springs.
Wanted woman known to frequent Mandurah, Rockingham, West Pinjarra areas
Detectives are looking for a 40-year-old woman who they believe may be able to assist them with an ongoing investigation.
Waikiki Beach Hotel to go ahead after liquor licence approved
The proposed Waikiki Beach Hotel is going ahead after its liquor licence was reinstated.
Man found critically injured outside Baldivis pub
A 35-year-old man is fighting for life in hospital after being assaulted in Baldivis.
Dawesville man charged with 38 child sex offences
A Dawesville man has been charged with a series of alleged child sex offences following an extensive investigation by Mandurah Detectives.