Police were at the scene of an unexplained death in Papakura yesterday afternoon.
An ambulance was called to Alma Cres shortly before midday. Police said a 54-year-old woman was found in her vehicle outside her home address in Papakura.
She was pronounced dead by ambulance staff at the scene. Police described the incident as a "sudden death" and said "inquiries are currently being completed to establish the circumstances surrounding her death."
A neighbour said the woman and her daughter had been arguing "all morning".
The woman left the house and got into her car, with her family believing she had driven away.
However, she was later found in the car outside their house. Paramedics had pulled her out of the vehicle to try to resuscitate her, he said.
"That's when they saw she had blood on her."