More than 50 people are still listed as missing.
Police also released the names of two more of the victims killed. They were Natasha Sarah Hadfield, 38, of Kaiapoi, and Owen Morris Wright, 40, of Lyttelton.
The news comes after police advised they were evacuating 60 properties in the exclusive Christchurch suburbs of Redcliff and Clifton Hills after cracks appeared in cliffs above the houses.
Residents in Kinsey Tce, Tuawera Tce and at the bottom of Clifton Tce were asked to head towards the Sumner Beach Surf club, police said.
Police were going to each affected house, and a geologist was assessing cracks in a nearby cliff that was causing concern.
It was not known how long the residents would be out of their homes, police said.
