Giriraj Kishore, a senior leader of the hardline Hindu organisation VHP (Vishwa Hindu Parishad or World Hindu Council), has died after a long illness.
Mr Kishore, 94, died in Delhi on Sunday evening at the VHP headquarters, the organisation said in a statement.
Born on 4 February 1920 in Etah district in Uttar Pradesh state, he served as the vice-president of VHP.
Mr Kishore played a major role in the campaign for a temple to Hindu god Ram in the northern town of Ayodhya.
He was among a group of politicians accused of inciting a Hindu mob to destroy the 16th Century Babri mosque in Ayodhya in December 1992.
Mr Kishore joined the Rashtriya Swayamsevak Sangh (RSS) - the ideological fountainhead of hardline Hindu organisations - at an early age and was one of its most senior campaigners.
The RSS founded VHP in 1964 to give Hindus what they believed would be a clearly defined sense of religious identity and political purpose and sent Mr Kishore to work with the VHP in 1983.