Magnitude 7.1 Earthquake Rocks New Zealand

Sept. 4, 2010: People stand outside a building damaged by a 7.0-magnitude earthquake in central Christchurch, New Zealand. A powerful earthquake struck much of New Zealand's South Island early Saturday. No tsunami alert was issued and there were no reports of injuries, but looters broke into some damaged shops in Christchurch, police said. (AP)

Sept. 4: A car lies under fallen rubble in Christchurch, New Zealand after a powerful 7.0-magnitude earthquake struck much of New Zealand's South Island. (AP/TVNZ)

Sept. 4: A car passes through fallen rubble in Christchurch, New Zealand, after a powerful 7.0-magnitude earthquake struck much of New Zealand's South Island early. (AP/TVNZ)

Sept. 4, 2010: In this image from video children huddle outside on a sidewalk in Christchurch, New Zealand after a powerful 7.0-magnitude earthquake struck much of New Zealand's South Island. (AP)

Sept. 4, 2010: In this image from video a car passes through fallen rubble in Christchurch, New Zealand after a powerful 7.0-magnitude earthquake struck much of New Zealand's South Island. (AP)

Sept. 4, 2010: In this image from video a car lies under fallen rubble in Christchurch, New Zealand after a powerful 7.0-magnitude earthquake struck much of New Zealand's South Island. (AP)

Sept. 4: Building owners Dean Marshall, left, and Shaun Stockman are seen outside their building damaged in a 7.0-magnitude earthquake in central Christchurch, New Zealand. (AP/NZPA)

Sept. 4: A car damaged by rubble from a building is seen following a 7.0-magnitude earthquake in central Christchurch, New Zealand. (AP/NZPA)

Sept. 4: People walk past damaged stores on Colombo Street in central Christchurch, New Zealand. (AP/NZPA)

Sept. 4: A police officer is seen on a street blocked by rubble from a damaged building following a 7.0-magnitude earthquake in central Christchurch, New Zealand. (AP)