The Australian newspaper reports:
A number of roads, bridges and all schools are closed in Christchurch, as the New Zealand city once again wakes to the destruction caused by earthquakes.
Aftershocks, including a 4.7 magnitude quake, rattled the city overnight, following magnitude 5.5 and 6.0 earthquakes that struck yesterday.
No-one was killed but hospitals have been treating people for injuries caused by falling debris.
An estimated 20,000 residents have no power and some are without water.
Seismologists said that aftershocks in the magnitude 4 to 5 range could continue for days.