New Delhi, Aug. 20 -- Sajjan Kumar, former Member of Parliament and senior Indian National Congress leader, who was serving a life term for the 1984 anti-Sikh riots, died at 80 on Thursday. He was brought dead to Delhi's Safdarjung Hospital, hospital sources said.

Kumar, an 80-year-old three-time parliamentarian, had been involved in one of the most prolonged and consequential legal battles in India, the 1984 anti Sikh riots cases that followed the assassination of former Prime Minister Indira Gandhi.

For over three decades, Kumar faced multiple criminal cases relating to the violence, with outcomes that swung between acquittals and convictions across different courts.

In the Delhi's Raj Nagar area case, relating to the killing of five...