Fresh details have emerged regarding the collapsed building in Huruma Nairobi.
The building that killed two people had been marked for demolition by the National Construction Authority.
Mathare sub-County Deputy Commissioner Patrick Mwangi said some of the tenants had sneaked back into the condemned building and had been staying there for months.At the moment, rescue operations have been hampered due to congestion in the area.
Rescue teams have had to demolish nearby structures to access site of the collapsed building.
The National Disaster Management Unit Deputy Director Pius Masai said rescue efforts have also been hampered by Kenya Power's slow response to cut off electricity connection to the building.
Eleven of the 12 families that had been staying in the building are yet been accounted for.