Police discovered the decomposed body on Murdoch Drive yesterday.
A woman may have been living with her partner's decomposing body for several weeks before police were notified.
Their Murdoch Drive home was declared a crime scene after Police made the discovery yesterday morning.
A man in his 50s was found dead, but due to the recent hot weather authorities said it was difficult to know how long he had been dead.
The woman living in the Greenfields home did not report the death but is not being treated as a suspect in relation to the man's death.
Items were removed from the Mandurah home, an autopsy will be done to determine how the man died and a report for the Coroner will be prepared.
More to come.
Bondi Beach Statement
Police issue 31,000 driving infringements in first month of new AI cameras
Works underway on Rockingham and Safety Bay High School redevelopments
New measles exposure sites revealed in Bunbury
Dawesville man charged after allegedly leaving his elderly Great Dane to suffer painful conditions
Good Samaritan sought by police after helping teen during robbery in Baldivis
Under-16s social media ban now in force
Desperate search continues for missing Bunbury FIFO worker
Passengers now able to use credit, debit cards to tag on and off WA's public transport