Two men and a woman have been charged with the alleged murder of a mother-of-six in Byford.
Nardia Louise Spice was allegedly lured to a dog park by her housemates and murdered between 3am and 5am on September 23.
Police allege the 40-year-old died from "blunt force trauma" to the head with detectives seizing both "tools and weapons" as part of their investigation.
It is alleged her body was then moved by car and buried in bushland off Ronan Road in Jarrahdale.
"A body believed to be Nardia's was later located by police in the Jarrahdale area on the 7th October," Detective Sergeant Sam Hazlitt said.
Detective Hazlitt said the four people charged and Ms Spice were housemates who lived a “transient” lifestyle.
Ms Spice had six children and a foster child who she was not living with at the time.
A 32-year-old man and a 30-year-old woman both from Brookdale have been charged with murder.
A 24-year-old man from Armadale has also been charged with murder, while a 26-year-old man from Armadale has been charged with accessory after the fact to an indictable offence.
Ricki-Lee and Rogue Traders to headline 2025 Mandurah Crab Fest
Driver critical after car ploughs into Collie River
Mandurah's Deputy Mayor Caroline Knight to take on mayoral role as Rhys Williams steps down
Accused arsonist charged over fire in Halls Head on Christmas Day
Dwellingup 100, Mighty Jarrah Trail Run named finalist in WA Sport Awards
Young boy dies in Meadow Springs house fire
State Government to fund Coodanup boat ramp upgrade
Locals claim $1m Lotto wins
Double demerits now in force over Christmas period