Christchurch was hit by two more strong aftershocks of 4.6 and 4.5 magnitude at 7.10am today -- one at a depth of 15km 20km west of Christchurch and the otago.

City streets aren't the only hazardous place in Canterbury. Trampers are being advised to keep clear of tracks in the region until they have been checked by the Department of Conservation (DOC).
There was concern fallen debris and damaged structures could pose a risk.
Two more aftershocks have hit Canterbury in the last hour.
A quake measuring 3.6 on the Richter scale hit at 8.14am and was followed 10 minutes later by a quake measuring 3.6.
Both quakes had an epicentre 30km south-east of Darfield with a focal depth of 5km, according to the GNS website.