Traffic management is being put in place on Wainuiomata Road, Wainuiomata, following a crash earlier this evening.
The two car crash was reported to Police at 6.35pm.
One person has been transported to hospital in a critical condition.
The road will be closed between Queen Street and Reading Street, to allow the Serious Crash Unit to undertake an examination.
Motorists are asked to take alternative routes.
Issued by Police Media Centre.