The second year post-graduate student lodged a written complaint with the police against the three teachers yesterday.
They have been booked under various IPC Sections including 354 (assaulting a woman with intent to outrage her modesty), 354A (sexual harassment), 294 (obscene acts) and 323 (voluntarily causing hurt), police said.
In her complaint, the student said she had been sexually assaulted by the senior resident and the associate professor for the past several days.
When the woman brought this to the notice of the head of the department on Sunday, he misbehaved with her instead of helping her, she alleged.
The three accused were yet to be arrested.
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