Ajadi said that he has documents to back his claim but insisted he could not transmit them to the newspaper electronically.
We publish news and views ranging from vigorous opponents of governments to government publications and spokespersons.
Ms Balogun was popularly known as Nifemi on the campus.
Meanwhile, in another recording, the same lecturer's voice is heard confiding what transpired between him and the female student in a woman who was later identified as Ms Bunmi.