A leading child protection charity says the report into the death of five-year-old Malachi Subecz highlights fundamental flaws in a system that has been failing for years.

Malachi was murdered by his carer in November last year, the carer was jailed with a non-parole period of 17 years in June.

Following a damning review, sweeping changes were recommended to the child protection, education, welfare and health sectors.

Safeguarding Children Chief Executive, Willow Duffy told Heather du Plessis-Allan Oranga Tamariki being sent an image showing bruising to Malachi's face, should've been enough to take action.

She says it should've been enough for them have been professionally curious and to find out what happened.

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