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Cathedral cracks being checked
Meanwhile, cracks in Christchurch Cathedral are being investigated.
Cordons have been set up around the cathedral and an inspection is under way to determine how serious the damage is.
The cracks may not necessarily be related to Saturday's 7.1 quake and the many aftershocks.
The cathedral earlier received an all-clear from engineers, but Dean Peter Beck asked them to return to check the cracks.
Dean Beck says there is no need for alarm: the check is simply a precautionary measure.