A total of 65 National Disaster Response Force personnel alongwith two dog squads worked at the scene of mishap since morning, alongwith 12 fire tenders and four ambulances.
About 21 families, who were primarily BMC's tenants lived in the 30-year-old structure, which was categorised as a "C-2" building, which meant that it was in need of urgent repairs.
It is the latest of several Mumbai building collapses this year.
