The U.S. Securities and Exchange Commission has issued a summons to Indian billionaire Gautam Adani, indicted on U.S. bribery allegations related to a bombshell federal indictment against him, a court filing showed.

The US SEC seeks to summon the adanis; however, this request must follow the established protocol of completing other diplomatic formalities and passing through the Indian Embassy in the US.

Opposition politicians from Indian states named in the U.S. indictment of billionaire Gautam Adani denied any wrongdoing on Friday, after Prime Minister Narendra Modi's party said they had to answer for contracts signed while they were in power.