Two dead in early morning crash on Auckland's southern motorway

Two people have died and three others have been rushed to hospital after a crash on Auckland's southern motorway early this morning. 

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Three others were injured in the crash near the Highbrook Drive offramp. Source: 1 NEWS

One person is in a critical condition, while two others sustained moderate injuries, St John Ambulance said. 

Police were called to the crash between the on and off ramps of Highbrook Drive around 3.30am. 

Part of the southern motorway which was earlier closed near Highbrook Drive reopened about noon. 

Mainfreight's Don Braid told 1 NEWS their truck was not involved in the "terrible tragedy" but was first on the scene to the crash. 

"[Our driver] was able to stop in time even with the wet conditions."

Auckland District Health Board is treating the critically injured patient, while Counties Manukau DHB is treating the other two.