A Tongan woman was one of four people killed in a horror accident on a New Zealand highway today Tuesday 10.

A cousin of the deceased, who did not want to be identified, said the victim lived in Palmerston.

Police have confirmed that four people were dead while eight were injured following the collision earlier today at the intersection of State Highway 1 and Tutukau Road.

Of the eight that were injured, two were in a critical condition and the others were in a serious condition or have moderate injuries.

The injured have been taken to either Waikato or Rotorua hospitals and police continue to investigate at the scene.

The road closed until 9.15pm this evening and the road is now open.

More information in relation to the crash will be released later tomorrow morning, Police said.