Police will today resume the search for a mother-of-two, presumed murdered by her husband in the State's Mid-North.
Michael Burdon took his own life on their sheep grazing property near Mannahill yesterday while Police were there to investigate.
23 year old Tanja Ebert has been missing since last Tuesday.
It's believed the couple were having marriage problems.
They were last seen visiting the museum in Adelaide with their two children when they started their journey home.
Before his death, 41 year old Burdon told Police the pair had argued in the car at Roseworthy when Ebert got out and walked away.
Police searched the area but found no trace.
The suicide has made the investigation even more difficult but Police are expected to search the family's property today.
Detective Superintendent Des Bray says 'in the absence of anything to indicate that Tanja's alive, we're treating it as a murder investigation'.
'We're hoping for a miracle and that she'll walk through the door but sadly we don't think that will happen' he said.
Tanja arrived in Australia from Germany in 2012 and shortly after met and married her husband.
Their two young boys are being cared for by distraught relatives.