Major delays this morning on SH1 through Puhoi, with both lanes being blocked.

Emergency vehicles are in attendance, including ambulance, fire and police vehicles.

image credit: Newshub

We will continue to update as we learn more.

Kia kaha.

UPDATE 8:32AM

Due to a crash just north of Hungry Creek Rd, SH1 is currently blocked in both directions in the Puhoi area. Delay your journey.

UPDATE: 9:19AM

SH1 is CLOSED in both directions in the Puhoi area. Delay your journey or consider using alternative route via SH16.

UPDATE 9:27AM

Those who were first on the scene have confirmed there was a head on collision.

We will continue to update.

UPDATE: 9:33AM

We have learnt that the collision involved three cars. No trucks were involved. More information from NZTA below:

Due to a serious crash, just north of Hungry Creek Rd in the Puhoi area, State Highway 1 is CLOSED in both directions between Warkworth and Orewa interchange. This section of SH1 is likely to remain closed for some time today as NZ Police undertake a serious crash investigation. Consider delaying your journey or allow for extra time for a detour via SH16, northbound from Silverdale to Kaukapakapa to Makarau to Warkworth and southbound in reverse.

UPDATE 3:19PM

SH1 near Puhoi is now open and cleared. One person is critically injured, another suffered serious injuries while the third suffered moderate injuries in the crash, police said.