While Somaiya did not name this political leader, Chavan called the allegation baseless.
Addressing the media at BJP office here, Somaiya said that state government should publish a white paper on this, or he would publish a "black paper".
Twelve companies were involved in the scam, he said, of which four got the coal mines which should have gone to MAHAGENCO.
Reacting to Somaiya's allegations, Ashok Chavan said in Mumbai that state's role was limited to making recommendations.
"Somaiya alleges that coal block allocations were done by me. However, the allocation rights are with the Centre. The state government has no say in it but can only recommend," Chavan said, talking to reporters.
Chavan, who had to quit as Chief Minister in the wake of Adarsh Society scam and is facing a criminal case, added that he was "now used to baseless allegations".
"Somaiya should find a new scapegoat."