Police have confirmed homicide detectives are investigating the deaths of seven people – three adults and four children – after being called to a residence in Osmington at 5.15am Friday.
Specialist units from Perth, including the Homicide Squad and Forensic Crime Scene Unit, have deployed to the scene. Police are expected to remain at the residence for an extended period of time.
Two firearms have been located at the scene. At this point in time there are no concerns about wider public safety.
WA Police Commissioner Chris Dawson said officers responded to a “horrific incident” at a rural property in Osmington, about 20km north-east of Margaret River.
“Upon arrival, police located seven people deceased… I can only describe it as a horrific situation,” he said in a press conference on Friday morning.
“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 southwest.”
He said the bodies of two adults were found outside a building, while five were discovered inside.
Two firearms were located at the scene, and victims suffered gunshot wounds.
"We are trying to locate other members of the family and friends," Mr Dawson said.
"I'm not in a position to release any further details of the identity of the deceased."
Perth homicide detectives are helping local police in the investigation and are expected to remain at the property for several days.
A police chaplain is there to support officers.
Reverend Sarah MacPherson of the Anglican Augusta-Margaret River parish says St John the Evangelist church on Osmington Road is open for anyone who would like to come for prayer.
Alex, a local businessman, told AAP the tragedy was "pretty rough".
Mr Dawson said the small Osmington community would be reeling but was confident it would rally together.
"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.
"Naturally, we will be asking for anyone who does know anything about this matter to contact police."
Osmington only consists of a handful of roads, farms, vineyards, holiday chalets and horse studs.
Being near the tourism hotspot of Margaret River, it also has luxury accommodation and boutique dining.
Premier Mark McGowan said the incident was shocking.
"My thoughts are with the family and friends of the victims, and also with the first responders and investigators as they piece together this tragic set of circumstances," he said.
Local MP Libby Mettam said her heart went out to everyone affected by the tragedy.
- If you or somebody you know needs crisis support, call:
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- Anyone with information is asked to call Crime Stoppers on 1800 333 000.