Police have named the 1-year-old Whangarei boy who died in Auckland's Starship Hospital on Friday night.
He was Atreyu Taylor-Matene.
The little boy's surname had earlier been reported as McGahey, but police today officially named him as Taylor-Matene.
Police have launched a homicide inquiry and a team of 25 police staff are working to establish the cause of his death.
The scene examination continues today at the Carlton Crescent address in Kamo, where he lived with his mother Jessica Taylor and her partner.
Police also hoped to have the interim results of a post-mortem examination today. Those results would not be released, police said.
Yesterday police revealed Atreyu had suffered "significant head injuries".
Atreyu was taken to Whangarei Hospital about 10am on Friday then flown to Starship Hospital in the early afternoon. He died just before 11pm.
Northland acting criminal investigations manager Detective Senior Sergeant Kevin Bourke said the injuries suffered by Atreyu would have been caused by "significant force".
He said police were speaking to Atreyu's mother and her partner, and were also interviewing wider family members and neighbours.
"We're working on the fact that the post-mortem will be able to confirm the cause of death and also confirm the injuries that were inflicted on the poor little fellow."
Mr Bourke said it was clearly a trying time for the family.
"We have to keep an open mind as to where the injuries may have been inflicted. It's early stages and we are treating it as a homicide inquiry."
Ms Taylor's father, Donald McGahey wrote on Facebook of supporting his daughter at the police station while she made her statement. He also recounted events leading up to the death.
Atreyu's funeral would be held on Wednesday in Auckland, he said.
