Christchurch hit by 4.0 magnitude aftershock

9:01 pm on 18 June 2011

Christchurch was hit by a magnitude 4.0 aftershock on Saturday evening.

The quake struck at 8.27pm, at a depth of seven kilometres, and was located 10km east of Diamond Harbour.

GNS Science says it was felt widely on the Banks Peninsula and in Christchurch.