The CR Park home of 76-year-old woman was burgled on Saturday allegedly by a group of men.
Romil Majumder was home when the robbers came dressed as postal department staff around 4.30pm. When she let them in, they bound her and fled with some cash.
Majumder, a widow, lives with her son who is an events manager and is away in Bangalore.
Earlier last week, the south Delhi home of another elderly woman was robbed after she was bound and gagged.
The police have arrested one Naba Kumar Das and Mritunjay along with a jeweller, Ramzan Ali — who had bought the stolen jewellery — in connection with the case.