The letter comes after a report by the London-based Financial Times, citing documents from George Soros-backed Organized Crime and Corruption Reporting Project (OCCRP), alluded to a "fraud" by the Adani Group by selling low-grade coal as high-value fuel in 2013.
The Adanis' Australian dreams have been shattered.
Green and Indigenous groups in Australia have criticised the government's decision to grant new approval to Indian mining giant Adani's $16.5 billion controversial coal mine project in central Queensland.
The project was opposed by green groups and local residents.
An Australian environmental group has launched a legal challenge against Adani Enterprises' $7 billion Carmichael coal mine project in the Galilee Basin.
The challenge was launched by Mackay Conservation Group in January.