The east coast of New Zealand has this morning experienced the strongest aftershock following yesterday's earthquakes.
A 5.4 magnitude quake struck 125km east of Te Araroa at a depth of 12km just after 10.30am.
GNS Science describes it as a light earthquake.
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There have been a series of aftershocks overnight, most in the range of magnitude 3 to 4.
There were two at close to 1am, five around 5am and two around 7am.
Those quakes were marked either as weak or unnoticeable.
Geonet said there was a 4.4 quake 150km east of Te Araroa just before 6.45am and a 4.7 shake 135km east of the township just before 8am.
The agency said the most likely scenario in the next 30 days is that further quakes of smaller magnitude will occur - and less often.