The serious crash unit attended and inquiries were ongoing, he said.
The crash happened near the Main South Rd off-ramp, close to the Lookout Point Fire Station, about 9.10pm.
The road was closed overnight while the scene was examined.
On Friday, 27-year-old Tajinder Singh died in a two-car collision near Queenstown.
Forty-eight-year-old milk tanker driver Daryl Paul Hutt, of Timaru, died in a single-vehicle crash in South Canterbury on Saturday.
Another person was killed in a fleeing driver incident in Auckland on Thursday.
Last Easter weekend nine people died on the country's roads.
This year's Easter holiday period ran from Thursday until 6am yesterday.