Civil Defence and Urban Search and Rescue teams evacuated more residents in the Mt Pleasant area last night.
Twenty-three properties in Bridle Path Road, La Costa Lane, Maffeys Road and McCormacks Bay Road were evacuated for public safety because of falling rocks.
Evacuations began at 8.20pm and were completed at 9.50pm.
Civil Defence said evacuees were given the option of heading to a welfare centre but all found alternative accommodation.
Aftershocks have also seen Cathedral Square locked down due to to unstable buildings.
This morning a 3.2 magnitude aftershock hit within 5km of Lyttelton at a depth of 8km. Four houses were evacuated.
The Lyttelton tunnel has been reopened to emergency vehicles and local residents.
Aftershocks are decreasing in size and frequency. The last aftershock over 4.0 magnitude was at 6.52am on Saturday.
Aftershocks occurred at 7.36pm and 11.51pm on Saturday.
A 3.6 magitude shock occurred 10km east of Christchurch at a depth of 9km at 7.36pm, followed at 11.51pm by a 3.8 magnitude, 11km deep quake 20km west of Christchurch.
Two further aftershocks on Sunday occurred at 3.26am and 4.54am, both centred 10km south-east of the city. The first was a 3.0 magnitude at 7km deep and the second was 3.4 magnitude at 10km deep.
Meanwhile, workers at Scott Base say the quake could be felt as far away as Antarctica and the ice there has broken for the first time since 1997.
The flag is flying at half mast at the base as a mark of respect.
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