Since the bribery indictment last week, Indian billionaire Gautam Adani's net worth has tumbled almost $16 billion to about $54 billion currently, according to Forbes real-time data. The group is also facing a backlash from investors and business partners.

The decline in net worth comes after allegations of bribery and has also dented the companies listed under the huge conglomerate, wiping out Rs 2 lakh crore in investor wealth.

Gautam Adani, one of the world's richest people, is accused of concealing that a solar energy project was being facilitated by an alleged $265 million bribery scheme.