Young German woman Tanja Ebert remains missing in remote South Australia a day after her husband and sole suspect in her disappearance took his own life.
The search zeroed in on the family's property near Mannahill, close to the NSW border, on Thursday.
But efforts to locate the 23-year-old were hampered as a Commissioner's Inquiry investigated the death of her husband Michael Burdon, and took charge of the scene.
Police reported officers "momentarily lost sight of" Mr Burdon just before his death on Wednesday.
A muffled gunshot then led them to find the 41-year-old dead near the home on the 410 square kilometre pastoral property.
Mr Burdon had been interviewed at a nearby police station earlier on Wednesday before being returned to his house.
He remains the only person of interest in the presumed murder of Ms Ebert, but Detective Superintendent Des Bray said he made no admissions related to his missing wife.
"Michael was not under arrest at the time and at this point in time there is still no evidence to prove that Michael is responsible for the murder," Supt Bray told reporters on Thursday.
He said Mr Burdon's death had made the investigation more difficult and the couple's children, aged one and three, were too young to provide any information.
The boys were currently being cared for by another family member.
"The welfare plan that will be considered for the children will obviously address anything they may or may not have been exposed to," Supt Bray said.
Ms Ebert was last seen near Roseworthy, more than 50km north of Adelaide, as she drove home from Adelaide with her husband and children last week.
Mr Burdon told police she became agitated and got out of the car and walked off.
However, he did not report her as a missing person, with another family member contacting authorities two days later.
She was known to be carrying a large amount of cash but left her passport, phone and other belongings behind, along with her two children.
Ms Ebert came to Australia from Germany several years ago and married her husband earlier this year.
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