A baby boy in Hamilton who was airlifted to Starship Children's hospital with critical injuries on Sunday has died.
The child, understood to be about 9 months old, suffered head injuries after what police say was a domestic-related incident.
Detective Inspector Karl Thornton, Acting Waikato District Crime Manager said a scene examination would continue at the baby's York St home in Hamilton.
He says a number of people are being spoken to in relation to what happened prior to the baby's initial admission to Waikato Hospital.
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"Our thoughts and condolences are with the family at present. We have a substantial number of enquiries to complete before we can establish exactly what has occurred."
A post mortem will be conducted today in Auckland.
A 32-year-old man is due in court this morning for a bail hearing after he was yesterday charged with assaulting the baby.