The victims were identified as Mhaisani Baatliwala (75), Halima Sheikh (50) and Mobin Lakha (18), they said.
While Sheikh died at the Sion Hospital, two others succumbed at the Hinduja Hospital.
Yesterday, an elderly woman identified as Zaibunissa Abdul Sattar Laakha (76) was killed and six persons were injured when a portion of a four-storey building caved in, apparently due to rain, in Mahim.
According to BMC, debris removal operations are still on at the collapse site of 'Altaf', located on Cadell Road.