The Tamil Nadu government on Sunday sealed a private medical college in Villupuram after huge protests by parents of the three female students who committed suicide.
The parents alleged it to be a case of murder, however, the police have registered a case of suicide and started investigation.
District collector P Lakshmi issued orders to seal the college till further notice, amid allegations by the students that the college was charging high fees and offered no facilities to the students.
The students have been protesting the college management for several months now.
Lakshmi and senior police officials held meetings with the parents and the students and assured them of taking strict action in the case.
Subramanian, an administrator (correspondent) and Sudhakar, son of college chairman Vasuki Subramanian, were among the four persons being interrogated. The students have demanded arrest of Subramanian whom they hold responsible for the suicide of the three women.
Meanwhile, Tamil Nadu health minister C Vijayabaskar said a thorough probe would be conducted into the incident.
Some political parties demanded a compensation of Rs 25 lakh each for the family of the dead women.
Three female students from SVS Naturopathy and Yoga College in Villupuram drowned themselves in a well near their college as part of a suicide pact late on Saturday evening
A note recovered from the spot accused the management of the naturopathy and yoga college of pushing them into taking the extreme step.