NEW DELHI (AP) — Indian billionaire Gautam Adani, one of Asia’s richest men, may be facing his biggest challenge yet with an indictment by U.S. prosecutors for alleged fraud and bribery. But it’s unclear just how the case will affect his businesses and own future — as well as the Indian economy and government.

One of Asia’s richest men, Indian tycoon Gautam Adani, is again in the spotlight. In an indictment unsealed in New York, Adani, 62, was charged with securities fraud and conspiracy to commit securities and wire fraud.

Authorities said Adani and seven other defendants, including his nephew, agreed to pay about $265 million in bribes to Indian government officials to obtain solar energy supply contracts expected to yield billions in profit.