One person has died in a crash in Southland this morning.

The crash happened on the Riverton-Wallacetown Highway at Oporo.

A a four-wheel drive and a tanker collided at 7.50am.

The driver of the four-wheel drive died at the scene.

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There are no further injuries.

The road is closed between the intersections of Taramoa Rd and Cumnock St, Wallacetown, and diversions are in place.

The Serious Crash Unit will be investigating.

The crash brings the Easter weekend road toll to three.