Two people have died after the van they were traveling in hit a bank and overturned near Kumeu, west of Auckland.
Emergency services were called to the crash on Old North Road at 2.30am on Saturday.
Two passengers died at the scene and the driver was taken to Auckland City Hospital in a moderate condition.
The road was closed for several hours but has since re-opened. The Serious Crash Unit is investigating.
Police say the cause of the crash is unclear but they are urging motorists to drive with extra care because thick fog is covering much of the Auckland area.