8pm Update:
Police can confirm two people died in the two-vehicle collision on State Highway 1, Titri/Waihola this afternoon.
Emergency services were called at around 12.15pm.
Sadly, two people died at the scene.
A further four people were transported to hospital, three in a critical condition and one in a serious condition.
Enquiries into the circumstances of the crash are ongoing.
5:25pm UPDATE: Road now open.
Emergency services are responding to a two-vehicle collision on State Highway 1, Titri this afternoon.
Police were called at around 12.15pm.
Initial reports suggest there are serious injuries.
The road is closed between Titri Road and Bungards Road.
Motorists are advised to avoid the area and follow diversions.
The Serious Crash Unit has been advised.
Enquiries into the circumstances of the crash are underway.
Detour: (light vehicles) For northbound Traffic, use SH1 then turn left on Titri Road and turn left back onto SH1. Reverse for southbound traffic. Please note this detour is for light vehicles only.