Detectives hope toxicology and pathology tests will shed light on what caused the deaths of a married couple whose bodies lay undiscovered in their expensive Sydney home for weeks.
Police say the husband and wife, both 54, probably died "a number of weeks" before their bodies were found at their northern beaches home on December 7.
Emergency services were called to the property on secluded Gilwinga Street, Bayview, responding to concerns for the welfare of the pair.
There were no apparent suspicious circumstances but investigators on Tuesday said they were awaiting the results of toxicology and pathology tests before preparing a report for the coroner.
The couple's next of kin have still not been located and notified, almost a fortnight after the gruesome discovery.
News Limited reports the couple were "reclusive" and one neighbour had never seen the woman, though she and her husband had lived in the palatial home for 20 years.
Properties in the street come with multi-million-dollar price tags and one real estate agent described the cul-de-sac as "coveted".
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