Mail Online reports that the quake, which caused “moderate shaking” was registered near Invercargill, the New Zealand Herald reports.
While the quake was initially classified as strong, it has since been downgraded to moderate.
According to reports the quake hit 585km south-west of Invercargill at a depth of 12km and might have been felt in Balclutha, Gore, Invercargill, Lumsden, Roxburgh, Te Anau and Tuatapere, GeoNet said.
No tsunami warnings have been issued yet.
M5.0 quake causing moderate shaking near Invercargill https://t.co/o9EKj2W407
— GeoNet (@geonet) September 20, 2017