New Zealand hit by second strong quake
An earthquake measuring 6.3 in magnitude has hit New Zealand's South Island, hours after at least two people were killed by an initial quake, BBC reports.
The new tremor struck about 13:45pm local time (00:45 GMT) at a depth of 10km (6 miles), northeast of Christchurch.
A 7.5-magnitude quake, with the same depth, had hit the same area just after midnight, triggering tsunami warnings.
Authorities are rescuing and evacuating residents along the east coast.
There have been hundreds of strong aftershocks, causing power shortages and cuts in water supply.
GeoNet, a government-funded project monitoring earthquakes, said the first earthquake was actually two related tremors, and that aftershocks would continue over the next few weeks and months.