New Delhi, May 18 (IANS): Accusing Haryana Police of a shoddy probe into the suicide of Manipuri student Dana Sangma at Amity University last month, her family members have asked the high court to transfer the case to the Central Bureau of Investigation.

"We have filed a petition in the Punjab and Haryana High Court, pleading for the transfer of the case to CBI as we are not happy with the progress made by local police," Balsame Sangma, the victim's elder sister, told reporters.

Dana, an MBA student, committed suicide in her hostel room April 24 after she was allegedly humiliated for cheating in an exam.

Balsame Sangma said her sister was subjected to a "different treatment". However, when her father took up the issue with the university, Dana was told to concentrate on her studies.

"She had called our father a couple of times about being treated differently but she said she will manage it," Balsame said.

Victor D. Sangma, a relative, said Haryana Police were favouring the institute.

"Dana's family members were not allowed to enter the university and her body was removed from the hostel room before her local guardian arrived. This raises several questions," Victor D. Sangma said.

He said that police had refused to share details of the case with the family members and urged Home Minister P. Chidambaram to take a tough stance on the matter.