Delhi Police told IANS that a case of abetment to suicide has been registered against Kanda and Aruna Chaddha at the Bharat Nagar police station.
"We are also taking help of call records of Anuradha Sharma to ascertain whether Kanda, Aruna Chadha or their aides were threatening or harassing her family," Karunakarn told IANS.
The postmortem of the victim was conducted Saturday at Babu Jagjeevan Ram Memorial hospital at around 2 p.m, an official said.
Geetika, 23, a former air hostess in the defunct MDLR airlines belonging to Kanda, had committed suicide on the intervening night of Aug 4-5, 2012 by hanging herself from a ceiling fan at her house.
She had left two suicide notes naming Kanda and Chaddha for harassing her and driving her to suicide. Both Kanda, who is the prime accused in the case for abetting the suicide of Geetika, and Chaddha, are now in judicial custody, and have denied the allegations.