A strong earthquake hit Christchurch this afternoon, followed by a lighter tremor after a pause in aftershocks in the city.
GeoNet says a magnitude 4.3 quake was felt at 1.35pm.
The quake was centred 15 kilometres east of Christchurch at a depth of 12km.
ONE News reporter Joy Reid in Christchurch says the quake "wasn't too big, just a rumble, rumble", adding it was the "first one in a while".
Reid said local people thought the quake was magnitude 4.6.
A Christchurch resident has told ONE news the quake was a "rolly polly" motion.
A moderate 3.6 magnitude quake was felt at 2.01pm. It was located in the same area but at a depth of 11km.
Aftershocks have become less frequent recently following the powerful 6.3 magnitude quake on February 22, 2011 which killed 185 people and cause widespread damage in Christchurch.
It came nearly six months after the magnitude 7.1 earthquake on September 4, 2010 which caused significant damage to Christchurch and the central Canterbury region, but no direct fatalities.