Suspicious death in WA's southwest

The death of a man who was found unconscious in Western Australia's southwest is being treated as suspicious by police.

Officers were called to a home in Bunbury's outer suburbs at about 2.45pm on Monday, when they found the 38-year-old man.

St John Ambulance staff were unable to revive him.

Major crime squad detectives and Bunbury detectives are continuing to investigate the circumstances surrounding the man's death.

They are appealing for anyone who saw anything suspicious on Darwin Way, College Grove to come forward.