Authorities of North Bengal University (NBU) on the outskirts of Siliguri have filed a complaint with Matigara police on Saturday against the teacher of Siliguri College who purportedly demanded money from an undergraduate student in exchange of good marks in her final exams.

An audio clip — reportedly the conversation between the accused teacher of political science and the girl student — had surfaced on the Internet a couple of days back.

In the conversation, the teacher is apparently heard saying to the girl that she needs to pay him Rs 10,000, and in turn, he would help her in getting good marks in her exams. He allegedly claimed to have connections with some staff of the varsity with whose help he can get the work done.

On Friday, the girl had filed a complaint with the college authorities.

“We have heard the audio clip. The vice-chancellor (Subires Bhattacharyya) is utterly disappointed...and has instructed us to take appropriate steps. Accordingly, we have filed a complaint with the police on Saturday,” Dilip Sarkar, the registrar of NBU.

The registrar added that they wanted the police to find out the authenticity of the audio clip and if so whether anybody else was involved in such alleged malpractices.

Along with the complaint, the varsity has also handed over the audio clip and some other documents to the police for investigation.

It has also been decided that the accused teacher would be kept away from all activities related to exams conducted by the varsity and the colleges affiliated to it.

The teacher, who was one of the observers of the NEET exam to be held on Sunday in Siliguri, has been relieved from duty.

“After the accusations, it has been decided that he won’t be put on observer’s duty during NEET. A number of guardians of students who will appear in the exam also urged that the teacher be kept away from the duty,” said a source.

On Monday, sources said, the governing body members of Siliguri College will meet to discuss the issue.

Ranjan Sarkar, the Darjeeling (plains) district Trinamul president, went to NBU on Saturday and submitted a memo to the registrar, urging him for an internal inquiry. Trinamul Chhatra Parishad held a sit-in demonstration in front of Siliguri College, seeking steps against the teacher.