The woman, a student at a college run by Chinmayanand's trust, has been missing since August 24 (File)

The mystery surrounding the sudden disappearance of a post-graduate student, who levelled harassment charges against BJP leader Chinmayanand, continued on the sixth day as her family awaited for concrete information about her whereabouts.

The woman, a student at a college run by Chinmayanand's trust, has been missing since August 24, a day after she posted a video on social media, alleging that the former Union minister was harassing and threatening to kill her.

She had not named Chinmayanand in the video but said "a senior leader of the sant community". The politician, who faced similar accusations in 2011 and was charged for raping a woman who stayed at his ashram, has disputed the charge.

Uttar Pradesh police claimed the student was spotted at a Delhi hotel on Wednesday but had left the place before officials reached there. A search is under way to trace her.

On Thursday, Kotwali police station in-charge Pravesh Singh said the woman's hostel room in Shahjahanpur was sealed last evening to avoid trespassing and evidence tampering. Her mother had visited the hostel on August 24 after news the student had been missing spread. She however found her room locked.

Her college's principal told PTI that though classes began on August 5, she has not attended any since. He said she had begun working at a library after college hours in July 2018.

In the video she posted online, the student alleged she has "evidence" that the 72-year-old three-time Lok Sabha member, who was a minister of state in the Atal Bihari Vajpayee government, had harassed and threatened to kill her.

Her father later filed a written complaint, accusing Chinmayanand of sexually harassing his daughter.

But the politician's lawyer Om Singh claimed his client was being blackmailed and had received a message on WhatsApp on August 23, the day the video surfaced, demanding Rs 5 crore ransom.

"There is not an iota of truth in their claims," the lawyer said.

The student's mother has said she talked to Chinmayanand over phone after visiting her hostel and he told her he was in Haridwar and will try to find her after his return to the city.

The same day, her father said, the family received a call from the woman and she told her mother she was fine.

Her father said he called back on the phone number and was told it was the reception of a hotel in Mahipalpur in Delhi. But, according to UP police, she was spotted in a hotel in Delhi's Dwarka on Wednesday and she was seen accompanying a man in the CCTV footage.

Shahjahanpur Superintendent of Police S Chanappa said Chinmayanand has been booked on charges related to kidnapping for murder and criminal intimidation.