Police investigating the death of a child in East Tāmaki are appealing for sightings of a car or any suspicious activity in the area on Sunday night.
A 37-year-old man has appeared in the Manukau District Court on Monday morning charged with the child's murder.
He was remanded in custody without plea and is next due to appear in the High Court in Auckland on 5 February.
In the early hours of Monday police found a child dead in a car, shortly after a man spoke to staff at Manukau police station.
Police say they are not seeking anyone else in connection to the death.
Acting Detective Inspector Veronica McPherson, from Counties Manukau CIB said police want to hear from anyone who saw any suspicious activity around the Waiouru Road area in Highbrook and East Tāmaki between 8.30pm and 1am last Sunday.
Officers would also like to hear from anyone who saw a blue-coloured Nissan Bluebird in that area between those times.
Anyone with information can share it online or by calling 105, using the reference number 250106/7049.
Information can also be provided anonymously via Crime Stoppers on 0800 555 111.