There were seven bodies in total, four children and three adults. The killing is the country's worst mass shooting in more than two decades.
The property at the centre of the horror discovery is situated about 100 metres past the Osmington and Cain Road intersection. "I just prayed that I didn't know the family, as it turns out, I kind of do". "That couldn't happen here".
"They all resided in the same property. Police are now responding to what I can only describe as a horrific incident".
"This devastating tragedy will no doubt have a lasting impact on the families concerned, the whole community, and in particular, the local communities in our South West", he said.
Police are still trying to locate next of kin and friends.
"They were a very socially-aware family, doing their best to create a safe community, and that is why it is so shocking to think that could be destroyed so quickly".
The suspected murder suicide is the biggest shooting massacre since Port Arthur in Tasmania in April 1996.
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The Nigeria Police Force is the first defender of Democracy and all democratic institutions in Nigeria and will continue to do so. The primary responsibility of the Police is maintenance of law and order as well as protection of lives and property", it said.
The call to triple-0 was recorded and reportedly made by the killer, but that's all police would reveal about the tip off to the tragic events at the idyllic farm.
Australia has banned all semi-automatic rifles and all semi-automatic and pump-action shotguns, and has a restrictive system of licensing and ownership controls.
In a statement, West Australian Police said officers were expected to remain at the home for "an extended period of time". "Australians took the murders personally: Polls showed 95 percent favored the new laws". Two guns were also found.
Early yesterday morning, news spread like wildfire through the town of 9,000 that a serious crime had occurred.
They said criminals would be emboldened because more of their victims would be unarmed. Former United States President Barack Obama [VIDEO] often used Australia's strict and well-regulated gun control laws as an example as an outline for American gun control laws.
He noted, however, that there were no significant changes in gun-related homicides in the country.
Next to the dead was found the weapon from which, presumably, could have committed the crime. The place was discovered two firearms. Those who had these types of firearms were ordered by the government to hand them over.
One local who wished not to be named described the family at the centre of the tragedy as "quiet".