Search for survivors as Nigeria building collapses
STORY: The agency's chief executive Olufemi Oke-Osanyintolu said the building was being constructed next to a hospital in the neighborhood of Oniru, adding that at least four people were still trapped under the rubble.
A crowd watched as earth-moving equipment was used to removing debris.
Buildings frequently collapse in Africa's most populous country, where regulations are poorly enforced and construction materials often substandard.