Police is yet to question Gopal Kanda, her employer and the Minister who quit Haryana Ministry, though it has served a notice to Anuradha Chaddha, who was also named in the victim's suicide note.
Geetika Sharma allegedly committed suicide yesterday and in her suicide note named Kanda and Chaddha of harassing her.
Investigators have seized the victim's laptop, data cards, mobile phone and other documents from her home at Ashok Vihar in north east Delhi on Monday to gather evidence against the Minister.
It is alleged that Kanda was pressurising Sharma to rejoin his firm which she had left recently to pursue MBA, a senior police officer said.
Geetika's family had alleged that Kanda had sent an email to Emirates, where she was working after leaving Kanda's now defunct MDLR airlines, under a fictitious identity.
The family also alleged that Chaddha had asked Geetika to sign certain papers on August three over telephone while it was claimed that Kanda threatened to file a case against her if she did not come to office in person to sign the papers.
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Kanda has denied allegations.
Meanwhile, Geetika's maternal uncle Sushil Kumar showed some papers, which is said to have been sent by government to authorities in Dubai asking them to send her back to India.
Family members demanded a probe by CBI.
Meanwhile, sources said a medical board would be constituted to ascertain if the deceased was subjected to sexual assault. Police said that the post-mortem report would be available tomorrow.