Relatives of the family at the centre of a suspected murder-suicide in Western Australia say they are "stunned" by what has happened.
The unnamed relatives of the Miles family said they were "still trying to understand how this could happen".
Katrina Miles, her four children, and her parents Peter and Cynda Miles were all found shot dead at their property in Osmington, near Margaret River.
Police confirmed they believe the killer to be among the dead.
Police Commissioner Chris Dawson said they received a phone call from a man at the property alerting them to the shootings early on Friday morning.
"I wish to strongly emphasize that police do not believe any other person is involved in these crimes. Police are not searching for any other suspects," he told reporters.
He said three firearms found on the property belonged to Peter Miles, 61.