In April 1740, while Bajirao was inspecting his lands at Khargon, he suddenly became ill from fever (possibly heat stroke) and died. Kashibai, Chimnaji Appa and Balaji (Nanasaheb) came to Khargon. Bajirao's mortal remains were consigned to flames on 28 April 1740, at Raver Khed on the banks of the Narmada River. Mastani died at Pabal Village near Pune, soon afterwards.
It is not known if she committed suicide or died of shock after hearing the news of her husband's death. One folk tradition claims that she committed suicide by sati.[7]
Mastani's grave is in Pabal and is called Mastani's samadhi or mazaar.[8]