A three-vehicle collision temporarily blocked State Highway 1 near Hukerenui in Northland on Wednesday.

The crash happened about 12.50pm 500 metres north of Waiotu Block Rd.

One of the vehicles involved was a ute. Traffic had started to build up from both directions and police were organising diversions.

St John ambulance crew were on scene to help with those who were injured.

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Officers at the scene had also asked for the serious crash unit to attend.

The road was reopened at about 4.15pm.