The 36-year-old woman was eight months pregnant.
His body was located by police in a house on Mataro Drive, near Garrido Way, Dayton at 6:00 pm yesterday.
Few details have been released at this time and so far no arrests have been made public.
Police said they regard the incident as suspicious until proven otherwise.
Homicide Squad and forensic investigators worked on site today, with a section of the road closed to the public.
Police have issued an appeal for anyone with information relating to the incident to come forward or contact Crime Stoppers.
The woman was reportedly within weeks of giving birth.
[ https://bbcbreakingnews.com/2021/10/05/police-investigate-suspected-murder-of-heavily-pregnant-perth-woman/ https://d26toa8f6ahusa.cloudfront.net/wp-content/uploads/2021/07/30214746/a-quiet-place-part-2-bigs-16.pdf