The incident took place when some of the workers were in the process of cleaning a water tank at Bismillaha Space Building in Nagpada area

According to Mumbai Police DCP, Zone 1, Dr. Pravin Munde, "Four people has died in the incident and an investigation is been initiated by the J.J. Marg Police station in the matter"

The deceased were identified as Hasipal Shaikh, 19, Raja Shaikh, 20, Jiaulla Shaikh, 36, Imandu Shaikh, 38, an official said

The BMC said that the doctors at J.J. Hospital told the civic officials that four out of the five workers brought to the hospital were brought dead

The workers, who were private contractual laborers, were immediately rescued by the Mumbai Fire Brigade (MFB) and rushed to J.J. Hospital for treatment, the BMC said in an official statement

"The incident took place at Bismillah Space Building which is located near Good Luck Motor Training School on Dimtimkar Road in Nagpada area," said an official