"We have received complaint from the students today; FIR has been registered under Section 324 of IPC (voluntarily causing hurt by dangerous weapons or means)," a police officer involved in the investigation said.
He said "Investigation is going on; we will be calling the principal as well."
The students, who were witness to the incident, made the video, using a smartphone, showing the alleged caning or beating of students by the principal over "flimsy reasons".