No progress has been achieved in the case, Manesar's Station House Officer (SHO) Om Prakash said on Friday.
ACP Ravinder Tomar, who has been assigned to investigate the case, has been on leave since yesterday.
Dana, a first year MBA student and niece of Meghalya Chief Minister Mukul Sangma, committed suicide in her hostel room on April 24 after being allegedly humiliated by an invigilator who claimed to have caught her cheating in the exams.
Police have invoked the SC/ST Act beside pressing abetment to suicide charge (306 IPC) against the staff and management of Amity University at Punchgaon campus, Gurgaon in the case.
No arrest has been made so far.
Police is in possession of the victim's mobile phone and answer sheet.
Savita Mehta, Vice President of Ritnand Balved Education Foundation, which runs the Amity institute, said the untimely death of Sangma under tragic circumstances is a matter of deep regret for them.
She claimed the invigilator did not rip the victim's answer book nor did he use any abusive language as has been wrongly reported by some media.
The police, who is in possession of the answer sheet, agreed that it was intact and not torn.
Mehta said, "It seems there may have been other reasons related to her personal life that might have put psychological pressure but we cannot disclose the details at this moment because the matter is under investigation."
"We can share more details in future once the police investigation is over," she said.
Gurgaon: Police are yet to make any vital breakthrough in its probe into the death of Amity University student Dana Sangma, who allegedly committed suicide in her hostel room.
First Published: Friday, April 27, 2012, 23:55