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Source: New Zealand Police (District News)

State Highway 2 between Carterton and Greytown in the Wairarapa is closed following a crash earlier today.

A car collided with a tree at 11.20am.

The driver, the sole occupant of the car, has been airlifted to Wellington Hospital in a critical condition.

The road remains closed while the Serious Crash Unit examines the crash scene. 

Motorists in the area are asked to delay travel or take alternative routes wherever possible.