The teenager who could hold the key to the horror triple murder on an exclusive Cape Winelands estate is fighting for her life.
Her brother, the only other survivor of the crime, has been released into the care of an uncle after being taken in for questioning by police.
On Tuesday, the bodies of millionaire international businessman Martin van Breda, his wife, Teresa, and their son Rudi, 22, were found in their palatial home on the De Zalze Golf Estate in Stellenbosch.
Daughter Marli, 16, suffered extensive head injuries in the attack, while her brother Henri, 20, appeared to have suffered only cuts and bruises.
Police are yet to make any arrests or give a possible motive for the shocking crime.
Paramedics who went to the Van Breda home on Tuesday confirmed that an axe had been found on the scene but police have yet to confirm this as the murder weapon. The axe has been sent for forensic testing.
Investigators say the crime scene is likely to be cleared only by tomorrow.
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