At 4:35am on 4 September 2010, an earthquake of magnitude 7.1 struck Christchurch and the surrounding Canterbury region in New Zealand. The earthquake was succeeded by aftershocks that are still continuing. The aftershocks have included four other major earthquakes on 26 December 2010, and 22 February, 13 June and 23 December 2011. The 22 February event was the most destructive, killing 185 people. The earthquakes also caused major damage to the Christchurch CBD, with the total number of buildings needing to be demolished estimated at around 1100.
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