One person has been flown to hospital in critical condition after a crash which has closed State Highway One north of Auckland.
A number of other people have been injured in the three car collision near Puhoi.
A detour is in place from Silverdale; however NZTA is warning it will add at least 60 minutes to the journey.
Update: SH1 is CLOSED north of Puhoi. A detour is in place, which will add at least 60mins to your journey. ^LC pic.twitter.com/RXfTprgwht
— NZTA Akld & Nthlnd (@NZTAAkl) August 20, 2015
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