A man originally charged with fatally assaulting a Whangārei baby has now been charged with murder.
The five-month-old boy was pronounced dead by ambulance staff called to his home in the suburb of Raumanga last week.
The assault charge was withdrawn and replaced with a charge of murder in the Whangārei District Court yesterday.
The man has interim name suppression.
He's been remanded in custody, to appear in the High Court in two weeks' time.