The name of the four-month-old Wairoa boy who died in Starship Hospital overnight on Friday has been released by police.
He was Raynar-Lee Soljar Thompson-Hatley.
Provisional post-mortem results indicate that Raynar-Lee died from head injuries but the full results are not expected for several weeks.
Investigation head Detective Senior Sergeant Dave Greig yesterday said the possibility of charges would depend on the results.
"I don't want to even go there at this stage."