Relatives of two Swedish tourists who died in a car crash in Northland are being sought by Interpol to tell them of the tragedy.

The two young women, both in their early 20s, died when they lost control of their car on the northern side of the Brynderwyn Hills, south of Whangarei yesterday.

Their car crossed the centre line and hit a north bound car, killing the two women and slightly injuring the driver and front seat passenger of the north bound car.

Whangarei Sergeant Chris Goodall said police were trying to contact the relatives of the two women through Swedish authorities in Australia.

He said the women had just arrived in the country and were driving a rental car when they crashed.

He said the road had a "decided history of loss of control accident whenever it rains."

He said the road was three lanes wide but there was a tendency for people to "fall off" and to lose concentration.

It was the second fatal accident in the area in two days. On Friday a man died when his car and a truck collided on State Highway 1 near the Waipu turnoff, about 30km north of the Brynderwyn Hills.

He was Robert Watene, 22, of Whangarei.