Police say one person has died and three others have been seriously injured in a two-car crash at Stillwater on the West Coast.
The two-vehicle crash was reported to police just after 6.15pm.
Three fire engines, an ambulance and two rescue helicopters are at the scene on SH7.
The road is closed in both directions.
Motorists are asked to avoid the area as there will be significant delays.
An investigation into the cause of the crash is underway.