mukesh ambani
Three Chinese banks pursuing the recovery of over US$ 680 million owed to them as part of a loan agreement.
The Income Tax unit is handling a number of high-profile cases.
Several film stars, including Kangana Ranaut, Shah Rukh Khan, Sanjay Bhansali, Karan Johar and Rajnikanth, have also been invited.
India's richest man's endorsement of Congress candidate Milind Deora is a significant development in the current political climate, say political observers.
China had 49 fewer billionaires than a year ago.