A toddler revived by firefighters after being pulled from his burning home is fighting for his life in Middlemore Hospital.
Housing New Zealand has confirmed that when it last inspected the toddler's family home, all smoke alarms were functioning.
Why the alarms did not alert the family to the fire earlier is under investigation.
The 18-month-old was unresponsive when firefighters rescued him from the house in Malone Rd, Mt Wellington, on Saturday morning.
Adult relatives managed to help two other young children out of a second-storey window as the inferno ripped through the house, but the smoke became too intense and they had to abandon the rescue, leaving the little boy trapped inside.