Bal Thackeray, chief of the right wing Hindu party Shiv Sena, waves to the media as he arrives to cast his vote at a polling centre during the Maharashtra state elections in Mumbai October 13, 2009. REUTERS/Punit Paranjpe

Bal Keshav Thackeray, one of India’s most polarizing politicians and leader of an influential right-wing Hindu nationalist party that has dominated politics in the country’s richest city for two decades, has died aged 86.

Thackeray died of cardio-respiratory arrest on Saturday at his home, one of his doctors, Jalil Parker, said. He had been ill for some time and was rumored to have died earlier this week.

A religious zealot whose grip over Mumbai often resembled that of a mob boss, Thackeray was president and founder of the hardline Shiv Sena (Shiva’s Army) party, built around his fiery rhetoric on religion, immigration and communalism.

A hero of Mumbai’s Hindu working class, he was heralded as a staunch defender of regional heritage by his supporters and despised as a hot-headed bigot by others. He devoted his public life to championing the rights of Mumbai’s “sons of the soil”.