In this file photo, then Indian President Pranab Mukherjee speaks during the inauguration of the third edition of the Bengal Global Business Summit (BGBS) in Kolkata on January 20, 2017. (DIBYANGSHU SARKAR / AFP)

NEW DELHI - India's former president Pranab Mukherjee died at 84 in New Delhi on Monday, confirmed a tweet from his son.

Last year India's highest civilian award "Bharat Ratna" was bestowed on the former president

"With a heavy heart this is to inform you that my father Pranab Mukherjee has just passed away inspite of the best efforts of doctors of RR Hospital and prayers from people throughout India. I thank all of you," tweeted his son Abhijit Mukherjee.

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Mukherjee was the country's 13th President, from 2012-2017.

He has two sons and a daughter.

Son Abhijit and daughter Sharmistha Mukherjee are into active politics and belong to the main opposition party the Indian National Congress.

Last year India's highest civilian award "Bharat Ratna" was bestowed on the former president.

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Indian President Ram Nath Kovind expressed condolences at Mukherjee's demise. 

"Sad to hear that former president Pranab Mukherjee is no more. His demise is passing of an era. A colossus in public life, he served Mother India with the spirit of a sage. The nation mourns losing one of its worthiest sons. Condolences to his family, friends & all citizens," said Kovind in a tweet.

Prime Minister Narendra Modi too expressed his sadness. He tweeted: "India grieves the passing away of Bharat Ratna Shri Pranab Mukherjee. He has left an indelible mark on the development trajectory of our nation. A scholar par excellence, a towering statesman, he was admired across the political spectrum and by all sections of society."

Before being the country's Head of State for five years, Pranab Mukherjee had an illustrious political career spanning over five decades.

He held several portfolios, including defence, external affairs, finance, under several former prime ministers, including Indira Gandhi, Rajiv Gandhi, Narsimha Rao and Manmohan Singh.

Mukherjee had tested positive for COVID-19 on August 10 and had been hospitalised since.

With inputs from Reuters