took place on Friday, a police officer said.

"The woman stated in the FIR that she was called to the hostel for a counselling session. She then became unconscious after consuming a drink laced with drugs at the hostel. The woman realised she had been raped after regaining consciousness," he said.

She also alleged that the accused had threatened her with dire consequences if she disclosed the matter to anyone, the officer said.

"The accused student was detained last night before being formally arrested," he said.Further investigation is underway.

The development comes almost a fortnight after a student was allegedly gangraped inside a law college in Kolkata.