India, Sept. 22 -- An elderly couple in southwest Delhi's Dwarka was allegedly duped of Rs.6.2 lakh after cyber fraudsters held the two hostage on an overnight video call claiming to be officials from the Central Bureau of Investigation (CBI) on the intervening night of Friday and Saturday.

Police said the victims are Sita Devi, 68 and her husband Raj Pal, residents of Mahavir Enclave in Dwarka. Devi told police that late on September 19, she received a video call from an unknown number, and the caller introduced himself as a CBI official from Mumbai. He claimed that Devi had received Rs.2 crore in her bank account and accused her of involvement in financial fraud, she told police.

According to her complaint, the caller insisted that he...