That woman has now been charged with murder and will appear in Manukau District Court on Monday, September 5.
"Police are still keen to hear from anyone who may have been in the Lakewood Court area overnight and may have heard or seen something which could assist our inquiries.
"If you can help, please contact police via our 105 phone service or online at https://www.police.govt.nz/use-105, using Update My Report. Please reference file number 220903/3136."
Police teams at the scene of the critical incident. Photo / Hayden Woodward
The unit is now cordoned off and Vickers said police will remain on the scene today as they do an examination of the site.
"While we are in the early stages of our enquiries we want to reassure the community we do not believe there to be an ongoing risk to the public," he said.
Earlier ambulance, police and serious crime investigators had been at the scene.