Rescuers are toiling overnight in Christchurch, New Zealand to reach scores of trapped people after a 6.3-magnitude earthquake which has claimed at least 65 lives.

Christchurch Mayor Bob Parker says more than 100 people are feared buried in collapsed buildings in the city.

The disaster struck at a shallow depth of 5km (3.1 miles) on Tuesday lunchtime when Christchurch was at its busiest.

It is the South Island city’s second tremor in six months, and the country’s worst natural disaster in 80 years.

The mayor has declared a state of emergency and ordered the city centre’s evacuation.

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The official phone number for people outside the country seeking information on relatives in New Zealand is +64 7 850 2199.

(From: Yahoo News )