Former Indian Prime Minister Manmohan Singh has passed away at the age of 92.

Manmohan Singh is recognized as the architect of key liberal reforms he implemented while serving as Prime Minister from 2004 to 2014, and previously as Finance Minister, reports BBC.

Among those who paid their respects to Singh on Thursday was Prime Minister Narendra Modi, who stated on social media that "India mourns the loss of one of its most distinguished leaders."

Modi remarked that "Singh's wisdom and humility were always evident during their interactions, and he made tremendous efforts to improve the lives of people" during his time as Prime Minister.

Priyanka Gandhi, daughter of former Prime Minister Rajiv Gandhi and a member of the Indian National Congress party, expressed that Singh was "truly egalitarian, wise, determined, and courageous until the end."

Singh was the first Indian leader after Jawaharlal Nehru to be re-elected after completing a full term, and the first Sikh to hold the highest office in the country.

However, his second term was overshadowed by a series of corruption allegations that plagued his administration. Many believe these scandals were partly responsible for the Congress party's devastating defeat in the 2014 general elections.

CNN notes that Singh's government introduced social welfare programs, including an employment scheme for the impoverished rural population.