The National Emergency Management Agency on Friday said four persons died while one was rescued in the building that collapsed at Oye Sonuga Street, Palm Avenue, in Mushin, Lagos.
The South-West Zonal Coordinator of NEMA, Mr Ibrahim Farinloye revealed this to journalists.
He said two males and two females died, while one person was rescued in the building collapse.
Meanwhile, the Lagos State Government said it would investigate the cause of the collapse.
The Commissioner for Physical Planning and Urban Development, Mr Omotayo Bamgbose-Martins, made the disclosure in a statement.
During his visit to the scene of the three-storey building, which was said to be about 40 years old, the Commissoner directed that it should be pulled down immediately for safety reasons and to forestall further collapse.
He directed the Lagos State Building Control Agency and the Lagos State Materials Testing Laboratory to unravel the cause of the collapse.
Residents of the collapsed building also attempted to save their belongings after its remaining parts were demolished.
It was also observed that the collapsed building affected some parts of the adjoining building.
A few of the residents, who spoke to journalists stated that the building had shown distress signs before it eventually collapsed.