The main opposition Congress party has accused Modi and his Bharatiya Janata Party (BJP) of shielding Adani and stonewalling independent investigations into his dealings in the country, charges the ruling party has denied. Congress workers have also held street protests demanding a parliamentary probe.

Adani, 62, one of Asia’s richest men, was thrust into the spotlight last week when U.S. prosecutors in New York charged him and seven of his associates with securities fraud.

Gautam Adani was charged for allegedly conspiring to pay about $265 million in bribes to Indian government officials to obtain contracts and develop India's largest solar power plant project on November 21.