State Highway 1 is closed between Kaiwaka-Mangawhai Rd and Mangawhai Rd as a result of the crash.
SH1 TOPUNI - ROAD CLOSED - 6:00AM Due to a serious crash #SH1 is currently CLOSED in the Topuni area, between Kaiwaka and Te Hana, north of Wellsford. Detour in place via Mangawhai adds 25 mins & is not suitable for heavy vehicles: https://t.co/QkdlWYpQAc ^TP pic.twitter.com/V4rfPibpqb
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) September 23, 2019
Police said just after 6.30am that the road remains closed as officers and emergency staff work at the scene still.
Northbound traffic is being diverted via Mangawhai Rd, Tomarata Rd, Insley St, Moir St, Kaiwaka Mangawhai Rd and then back on to SH1.
Motorists heading southbound are being re-directed along the same route, in reverse.
24/09/19 01:58: Traffic incident in SH1, Topuni. 2 patients treated, 1 patient transported to Northland Base Hospital. Helicopter dispatched. For more details refer to Police. https://t.co/XEmE9IeJlD