Gurgaon, Feb 14 (IANS): A 26-year-old post graduate woman was murdered in Gurgaon and police are suspecting that the crime may be related to 'honour killing', an official said Saturday.

Jyoti, a resident of Bhora Kalan village on the Delhi-Jaipur-Mumbai National Highway-8 here was found dead in her house.

Jyoti and her younger sister's marriage was scheduled Feb 20 at a village in Haryana's Bhiwani.

"Jyoti was found dead in her house Friday morning. Someone informed the police that she died under mysterious circumstances," a senior police officer told IANS.

Her family members told police that she committed suicide by hanging herself.

Police registered a suicide case and the body was sent for post mortem examination.

"The autopsy report of the deceased revealed that she did not die due to hanging. It suggested that she was strangled to death and was hanged later," the officer said.

Now a case of suicide has been converted into sections of murder and others at Bilaspur police station.

The officer said that unknown people have been booked for murder.

Police have started investigating why the family members tried to mislead them by the 'suicide theory'.

"We have been questioning the family members of the deceased and investigating the 'honour killing' angle. Prima facie it looks like the murderer may be from the family," the officer added.