Taupo Police want a toddler's family to speak out, over what they believe happened to 18-month-old Comfort Joy Witeri-Thompson.
Comfort was killed by what police say were "deliberately inflicted" head injuries, at a Tirau address last month.
Today police called on "her immediate family and their associates" to come forward, as police seek to build up a picture of Comfort's life before she died.
"Comfort died as a result of head injuries police believe were deliberately inflicted.
"The enquiry team seeks the continued cooperation of family and close associates in bringing those responsible to account," Taupo Area Police said in a statement.
Any new information can be provided to the Tokoroa Police on (07) 885 0100, or alternatively to Crimestoppers 0800 555 111.