A crash on State Highway 16 near Kaukapakapa between three vehicles, including a large truck, has closed the road this morning.
The New Zealand Transport Agency is warning motorists to avoid the area or delay their journey after the crash, on the Twin Coast Discovery Highway just south of Makarau Rd.
The police said a person had been taken to hospital in a serious condition following the accident.
The agency said both lanes of the road were blocked after the incident. Police say the crash happened 6.15am.
The highway was closed between Makarau Rd and Kahikatea Flat Rd.