A Student of Sevanapitiya Vidyalaya in Welikanda was arrested on the charges of assaulting and injuring his principal this morning.
School principal R.M.G. Rathnaweera has visited a group of students while they were singing in a class room.
At that time, an altercation has taken place between the principal and students, and the altercation has gradually led to a clash situation.
Police said on that occasion, a student assaulted the principal with a timber stick and injured principal Rathnaweera was admitted to Welikanda hospital.