Quake aftershocks terror for city residents

A powerful new 5.1-magnitude aftershock rattled terrified residents of New Zealand's earthquake-stricken city of Christchurch today, as officials doubled their estimate for repairing the damage from nearly 300 aftershocks in five days.

The latest quake, just four miles (6.4km) below the Earth's surface and centred six miles (10km) south-east of the city, was felt by residents as the strongest aftershock in Christchurch since Saturday's 7.1 magnitude earthquake wrecked hundreds of buildings. Nobody was reported injured by the latest tremor.