Police in Wellington are investigating how a six-month-old baby received a severe head injury.
The child had to be airlifted to Wellington Hospital from a Kapiti Coast property at about 4.30pm yesterday.
Detective Senior Sergeant Grant Ferguson said police were trying to unravel the circumstances of the injury.
He said officers have been talking to family members who were in contact with the child yesterday.
Scene examinations are also under way, one in Waikanae and one in Raumati Beach.