India's Adani Group on Thursday called US charges that their billionaire tycoon founder Gautam Adani had paid more than $250 million in bribes "baseless", as the opposition leader demanded his arrest.

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.

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.