The quake hit at a depth of 153 kilometres (95 miles) around 42 kms southwest of the town of Rotorua at 3:02am local time (1502 GMT Thursday), the USGS said.
The Hawaii-based Pacific Tsunami Warning Center did not issue any advice following the quake.
In September a major 7.0-magnitude earthquake caused widespread destruction in Christchurch on the nation`s South Island. (*)
Editor: Kunto Wibisono
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