A man's been arrested over the murder of a mother of two at Noarlunga Centre.
The 36 year old from Ethelton suffered severe head injuries outside Colonnades and despite the efforts of Paramedics died at the scene.
A passerby is believed to have phoned for help just after midnight.
The 20 year old suspect was taken into custody and is expected to face court today.
Police have confirmed the attack was random and have ruled out robbery as a motive.
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