Oct 9 (Reuters) - Ratan Tata, the former Tata Group chairman who put a staid and sprawling Indian conglomerate on the global stage with a string of high-profile acquisitions, has died, the Tata Group said in a statement late on Wednesday. He was 86.

Addressing the Reliance Industries' annual Diwali dinner, Nita Ambani said that Ratan Tata was a “great son of India” whose demise has "filled us all with immense grief".

During the occasion, Nita Ambani called him a 'Great Son of India', a visionary industrialist and philanthropist who always strove for Society's greater good.

Trade and Commerce Minister Piyush Goyal paid tribute to the late Ratan Tata at the Indian Foundation for Quality Management's First Annual Symposium, honoring him for his leadership and global impact in showcasing India's industrial prowess while being a compassionate taskmaster.

Ratan Tata has died at a Mumbai hospital at age 86. Tata is the former chairman of India’s oldest conglomerate Tata Sons.

Ratan Tata—a former chairman of Tata Group who led the Indian megacompany through multiple significant international acquisitions—died at age 86, the group announced Wednesday. Tata took over the conglomerate in 1991 and led it for 21 years.

Nita Ambani expressed deep sorrow over Ratan Tata's death, calling him a "great son of India" whose death has left everyone in profound grief.

During Reliance Industries' Diwali dinner, Nita Ambani paid tribute to Ratan Tata, who recently passed away. She described him as a family friend and mentor, highlighting his contributions as a visionary and philanthropist.

In her speech, Nita Ambani described Tata as a “great son of India.” She stated, “Four days ago, we lost a great son of India. The passing of Mr Ratan Tata filled us all with immense grief. He was a dear friend of my father-in-law,