Wellington: At least two people were killed and more fatalities were feared after a powerful 7.8 earthquake struck New Zealand just after midnight Monday, while residents in coastal areas fled following tsunami warnings.
As dawn broke there was scant information from many rural villages in the South Island, which were isolated by landslips and fractured telephone communications as strong aftershocks continued for several hours.
Prime Minister John Key confirmed two people had died and said “we cannot rule out” that number will rise, nearly seven hours after the main quake.
Police were trying to reach the scene of one fatality at a remote property 150 kilometres north of Christchurch while another person died in a historic homestead which collapsed at the nearby fishing village of Kaikoura.
“At this point we are unable to give precise details of what caused those fatalities,” Key said, adding that communication problems made it difficult to get information.
Helicopters were taking officials workers to the worst-affected area, he said. “As soon as we can get a much better assessment of the actual damage then we can work out the next steps.”
Soon after the earthquake, tsunami warning sirens were activated in South Island coastal towns and along the east coast of the North Island, with police and emergency workers going door to door to evacuate seaside properties.
The ministry of civil defence, responsible for emergency management in New Zealand, initially warned of a “destructive tsunami” with waves of up to five metres (16 feet). The first waves were measured around two metres and four hours later authorities downgraded the warning, but said risks remained.
The earthquake struck at 12:02am Monday (1102 GMT Sunday) and was 23 kilometres deep, the US Geological Survey said, putting the epicentre near the alpine tourist village of Hanmer and the rural township of Cheviot in North Canterbury, South Island.
It was one of the most powerful shakes to rock earthquake-prone New Zealand and ignited painful memories for residents in Christchurch which was devastated five years ago by a 6.3 tremor which killed 185 people.
In the capital city Wellington, where shattered glass littered inner city streets, rail and bus services were cancelled and people were advised not to try to go to work Monday.
In several cities guests were forced to evacuate hotels when the quake hit, including Nelson, about 200 kilometres from the quake centre where the touring Pakistan cricket team are staying.
New Zealand is on the boundary of the Australian and Pacific tectonic plates, which form part of the so-called “Ring of Fire”, and experiences up to 15,000 tremors a year.