A woman has alleged that she was raped by a second-year student on the campus of the Indian Institute of Management Calcutta, The Indian Express reported.

The person accused in the case, a student from Karnataka, has been arrested and will be presented before the Alipore court on Saturday.

The man had invited the complainant, a student from another institute, to the campus for a counselling session, The Indian Express quoted unidentified police officials as saying.

The two had reportedly met online and later became acquainted over discussions about studies and their careers, The Times of India reported.

The complainant told the police that the man met her at the gate of the institution and asked her not to sign the visitors’ register. He then claimed that he had some work in the boys’ hostel and took her there instead of the counselling venue, The Indian Express reported.

The woman told police that she was given pizza and water, allegedly laced with drugs, after which she lost consciousness and was sexually assaulted.

The complainant claimed that she was semi-conscious for some time before losing consciousness entirely.

She regained consciousness in the evening and found herself alone in the hostel room, The Times of India reported.

She left the campus and contacted a friend, after which they went to the police station together and filed a complaint on Friday.

The police registered a case under sections of the Bharatiya Nyaya Sanhita pertaining to rape and causing harm by poison or other substances with intent to commit another offence, The Indian Express reported.

The police suspect the involvement of four others and have detained them for questioning, according to the newspaper.

The hostel room where the incident occurred has been sealed, and forensic samples have been collected from the scene, The Indian Express reported.