The coal ministry has told the Central Bureau of Investigation (CBI), probing alleged irregularities in coal block allocation, that no production had ever been reported from the 64 captive blocks that face allegation of illegal sales.

CBI is currently investigating into the allegation that coal produced from these blocks could have been illegally sold in the open market. The investigating agency initiated the inquiry based on a reference by the Central Vigilance Commission (CVC) after the principal opposition party,