An earthquake with a magnitude of 7.4 struck central New Zealand just on Sunday, the U.S. Geological Survey said. 
New Zealand's Civil Defence issued a tsunami warning, advising residents on the South Island's east coast to seek higher ground. 
The quake was 91 km (57 miles) north-northeast of Christchurch, the biggest city on New Zealand's South Island. 
The tremor was felt throughout most of New Zealand. 
Civil Defence said it was too early to assess the damage or whether there had been any injuries or deaths

Source: QNA