At least 65 people have died after a 6.3-magnitude earthquake hit Christchurch in New Zealand.

The tremor struck at 12.51 (23.51 GMT on Monday), 10km (6.2 miles) south-east of the city and at a shallow depth of 5km (3.1 miles), causing widespread damage.

Christchurch’s mayor has said that at least 200 people are believed trapped under rubble.

The damage is said to be far worse than after the 7.1-magnitude quake on September 4, which left two people seriously injured but no fatalities.

That quake’s epicentre was further away from the city and deeper underground, but still caused an estimated $3bn (�1.9bn) in damage.