Emergency services are responding to a serious crash on State Highway 1 between Porirua and Tawa.
The crash occurred at 3:45am and involved two cars and a truck.
One person has serious injuries and a second person has moderate injuries.
The road is blocked heading southbound and diversions are in place.
The Serious Crash Unit is attending.
Motorists are asked to avoid the area.
Issued by Police Media Centre