At least 20 other persons are feared trapped under the debris of the building in Navi Vasti locality, according to Asmita Nikam, District Disaster Management Control Officer.
The collapse occurred around 9 am, Regional Disaster Management Cell chief Santosh Kadam told reporters here.
"Body of Ruksana Khan was pulled out from the debris and five others were rescued and admitted to the state-run Indira Gandhi Memorial Hospital here," Nikam told PTI over phone.
Nikam also said that National Disaster Response Force (NDRF) teams have started rescue and relief operation along with fire-brigade personnel from Bhiwandi, Thane, Navi Mumbai and Kalyan civic bodies.
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