Indian Prime Minister Narendra Modi praised Tata as "a visionary business leader", saying he's "extremely pained" by the death. Tata ran the conglomerate for over20 years as chairman.

Tributes are pouring in following the news of Ratan Tata's death, but many want to know what the former business leader's cause of death was.

Ratan Tata, India's most respected industrialist and philanthropist who passed in Mumbai yesterday, was cremated this evening with full state honours amidst a rising outpour of rich tributes from all