Gautam Adani, the billionaire chair of Indian conglomerate Adani Group and one of the world's richest people, could face a long road to trial in the U.S. on criminal charges over his alleged role in a multi-billion-dollar fraud and bribery scheme.

Indian billionaire Gautam Adani has been slapped with criminal fraud charges in the US for allegedly orchestrating a $250m (£198m) bribery scheme to secure lucrative renewable energy contracts in his home country.

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.