The story

Residents of the Peruvian city of Ica said the ground shook again early Friday as they slept outside, their homes destroyed by Wednesday's 8.0-magnitude earthquake.

A quarter of the buildings in the city of 120,000, were destroyed, The Associated Press reported, as the temblor killed at least 400 people and left 1,500 more injured across the South American nation.

Other estimates put the death toll higher, and rescue workers continued to dig through rubble, holding out hope for survivors. Read full article »

CNN's Harris Whitbeck contributed to this report.

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All About U.S. Geological Survey • Lima (Peru)