An FIR was lodged against two Kendriya Vidyalaya students after a video of them brutally assaulting their classmate on the school premises surfaced on social media.

A school teacher, who did not wished to be named, said the matter was reported to the principal on the day of the incident, but he did not act on the information. “The principal intervened in the matter when the video went viral on social media, including Facebook and Twitter,” he said.

The video shows two boys in school uniform pushing and ruthlessly thrashing their classmate in the classroom in the presence of other students, Hindustam Times reported.

“We are verifying the authenticity of the video. The video will be sent for forensic test. We will be able to say more about the incident only after getting the forensic report,” said Superintendent of police Ashish Anand.

One of the attackers in the video is a ward of a fugitive criminal, the teacher added.Attempts to reach the school’s principal for comment failed as his cellphone was switched off.

Dalits or “untouchables” are commonly assigned with menial jobs under India’s deeply entrenched social hierarchy.

Concept of ‘untouchability’ has been outlawed in India but many Hindus still believe that contact with a person of low caste will render them impure.

Dalits form 16.6 per cent of the national population or roughly 200 million but continue to face oppression six decades after India banned caste discrimination.