Two men burst into the office of an Indian Supreme Court lawyer and anti-corruption activist in an attack caught on video.

Senior Supreme Court lawyer Prashant Bhushan was giving a television interview in his chambers, across from the Supreme Court in New Delhi, Wednesday when the assailants stormed in. They then pushed him to the ground, kicking and hitting him repeatedly until other lawyers pulled them off.

The lawyers detained one of the assailants and handed him over to police. A second attacker managed to escape.

A group calling itself Bhagat Singh Kranti Sena claimed responsibility for the attack. It said the attack was motivated by comments Bhushan had made earlier calling for a referendum in Kashmir to decide its future.

Officials said the suspects were able to push their way into Bhushan's office after claiming they had an appointment.

Bhushan told the Times Now television crew which was interviewing him and witnessed the attack that he stood by his comments.

Bhushan is a key supporter of Anna Hazare, the 74-year-old social activist who went on a fast-to-the-death hunger strike last month, bringing India to a standstill and forcing parliament to agree to tougher anti-corruption legislation.

Kashmir is divided between India and Pakistan but claimed in its entirety by both. The dispute has triggered two of the three wars between the neighbors since independence from colonial rule in 1947.