The GNS Science monitoring agency says the magnitude 4.8 aftershock struck last night causing minor damage.
Police Supt. Sandra Manderson today told reporters the death toll had risen to 166 with another body recovered yesterday. The final toll is expected to exceed 200.
A police cordon around the downtown disaster area has been partially lifted today to allow some residents and business owners to return to their ruined premises for the first time since the February 22 quake.