UPDATE 10.51AM: The death of woman following a mountain biking accident has increased Labour Weekend's official road toll to seven.

Police confirmed this morning that a woman died following a mountain biking accident on Luck at Last Road, Maungatautari shortly before 9am yesterday morning.

The woman was airlifted to hospital where she later died, says a police spokesperson.

"This death is included in the official Labour Weekend period, bringing the total number of lives lost on New Zealand roads to seven."

EARLIER:

This year's Labour Weekend road toll is sitting at six, five more than the same time last year.

The official road toll for the long weekend finished at 6am today.

There were no fatal crashes recorded overnight.

In the 24 hour period since the official long weekend began at 4pm on Friday, police attended four fatal crashes across the country.

National road policing manager acting Superintendent Gini Welch says it was a devastating start to the long weekend.

'We implore you to keep your speeds down, pay attention to your surroundings and the conditions, and watch your following distances to ensure you arrive alive.

'Most people behave safely on the roads most of the time, but it only takes one risky decision or moment of inattention to result in tragedy. Ultimately, the actions of every driver and rider makes a difference.”

Another person died following a crash in Tokomaru, Horowhenua on Monday night.

Two vehicles collided at the Makerua Road and Williams Road intersection about 11.30pm.

The driver and sole occupant of one vehicle died at the scene.

A passenger in the second vehicle suffered moderate injuries.

Police say inquiries into the circumstances of the crash are under way.

Another fatal crash happened in Tekapo on Sunday.

A man died after his car rolled on State Highway 35 in Tikitiki.

Meanwhile, at least a dozen people were injured in a three-car crash on State Highway 5, northeast of Taupo.

The crash happened shortly before 11am on Monday.

Police say those involved have moderate to serious injuries and have been taken to Rotorua Hospital.

Fatalities during the long weekend include a motorcyclist in Upper Hutt on Friday and three people in crashes in Whanganui, Gisborne and near Tekapo yesterday.

The man who died in a crash on the Tekapo-Twizel road near Tekapo yesterday has been named as 42-year-old Che Tekapa Hogg, from Auckland.

Three other people were seriously injured and airlifted to hospital.

Another motorcyclist is in a critical condition following a crash in northern Hawke's Bay on Monday.

Last Labour Day weekend, only one person died on the roads.

-Additional reporting from RNZ.