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Police are at the scene of an "unexplained sudden death" of a woman in Adelaide's north-east.
Police were called to the Somerset Avenue home at Redwood Park after a woman was found unconscious just before 8am.
The 26-year-old couldn't be revived.
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Police were at the scene for several hours door-knocking neighbours and gathering evidence.
9News understands detectives were searching for vision of a black car of interest.
Neighbour Matthew Thomson told 9News it had left the community in shock.
"It's definitely tragic," he said.
"Really, really unfortunate news for the family."
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Police are preparing a report for the Coroner.
Anyone who has any information that may assist the investigation is asked to contact Crime Stoppers on 1800 333 000 or online.
