Both Gautam Adani and his nephew Sagar Adani, a director at Adani Green Energy Ltd, have been summoned by the US Securities and Exchange Commission (SEC) to respond to the charges within 21 days.

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.

Indian billionaire Gautam Adani, one of the world’s richest people, was indicted by U.S. prosecutors for his alleged role in a $265 million bribery scheme, plunging his conglomerate deep into crisis for the second time in two years.