Five people were injured - one critically - in a head-
on crash north of Wanganui tonight, which closed State Highway 4.

An ambulance spokesman said two cars collided head-on at about 5pm. People were trapped in at least one of the vehicles.

Five passengers were taken by ambulance to Wanganui Hospital.

One had sustained critical injuries, one had serious injuries, and three escaped with only minor injuries.

Police Sergeant Andy Dow said the road was closed between Kakatahi and Raetihi to allow emergency services to clear the crash scene.

The road was still closed at 8.30pm but was expected to reopen shortly.