The quake was reported north-west of Snares Islands. Photo: GeoNet
A 5.1 earthquake struck south of Stewart Island on Monday morning followed by a smaller tremor.
GeoNet recorded the quake at 5.23am centred 110km north west of Snares Islands at a depth of 5km.
A smaller 4.4 quake closer into the Snares Islands was recorded a few minutes later, and was at a depth of 33km, GeoNet said.
About 20 people reported feeling the quakes.
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