The Latest: Powerful New Zealand quake causes local tsunami

WELLINGTON, New Zealand — The Latest on a strong earthquake that struck New Zealand (all times local):

5:40 a.m.

Authorities in New Zealand's capital are urging people who work in the center of the city to stay home on Monday following a powerful earthquake.

Wellington city officials said some large buildings were showing signs of structural stress and that the quake would like have caused damage to some buildings.

The city's suburban rail network was shut while crews checked tracks, bridges and tunnels.

The magnitude-7.8 quake struck early Monday, just after midnight.

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5:30 a.m.

A powerful earthquake that struck New Zealand's South Island has opened up snaking fissures in roads and triggered landslides.

In Wellington, the capital, it collapsed a ferry loading ramp, broke windows and caused items to fall from shelves. It also forced hundreds of tourists onto the streets as hotels were evacuated.

The full extent of the damage from the quake, which struck early Monday, just after midnight, is unlikely to be known before daybreak.

While there were no immediate reports of serious injuries in Wellington or Christchurch, the quake brought back memories of the magnitude-6.3 earthquake that struck Christchurch in 2011, destroying much of the downtown area and killing 185 people. That quake was one of New Zealand's worst disasters, causing an estimated $25 billion in damage.

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2:10 a.m.

New Zealand authorities say a powerful earthquake has generated a tsunami, with the first waves hitting the South Island.

The department of civil defense warned people all along the country's east coast to move to higher ground.

The magnitude-7.8 quake struck just after midnight Sunday near the city of Christchurch. It was at a relatively shallow depth of 10 kilometers (6 miles).

Some minor damage was reported in the capital, Wellington, over 200 kilometers (120 miles) away. There were no immediate reports of major damage or injuries in Christchurch.

Cox Media Group