A four-story building collapsed in Nigeria's commercial capital of Lagos on November 4, killing at least four construction workers, according to the Red Cross. Witnesses said that about 50 workers were trapped inside the rubble.
Lagos, Nigeria building collapse

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Rescue workers carry a survivor from the rubble of a building under construction which collapsed in Lagos, Nigeria, Nov, 4. 2013.

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An emergency official watches an excavator dig through the rubble of a collapsed building in the Victoria Island district of Lagos, Nov. 5, 2013.

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Police officers, rescue workers and onlookers gather near the site of a building under construction which collapsed in Lagos, Nigeria, Nov, 4. 2013.

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Rescue workers carry a survivor from the rubble of a building under construction which collapsed in Lagos, Nigeria, Nov, 4. 2013.