BJP also alleged the resignation letter of Mukherjee has been prepared only to save his nomination for the Presidential election and asked both Mukherjee and eminent scientist MGK Menon, who is the president of the Institute, to come clean on the issue.
"BJP alleges that it is a 100 per cent fabricated document....It's very unfortunate that persons contesting such offices as President of India are indulging in illegal activities. We are demanding justice from the Election Commission... We are waiting for a certified copy of the Returning Officer's order. It is open for all types of further action," BJP General Secretary Ananth Kumar told reporters.
BJP leader and PA Sangma's counsel Satya Pal Jain said the signatures of Mukherjee on the reply to the objections raised by it and that on his resignation letter do not tally and their objections to his (Mukherjee's) candidature. "There are apprehensions on the genuineness of this document. This seems to have been manufactured after we raised objections to his nomination," said Jain.
On what action the party was contemplating on the matter after their objections were rejected by the Returning Officer for the President's election, the BJP leader said the party was exploring various options, including legal. "The battle has just begun. We will fight it out. It is a battle for justice. Very clearly, we are telling, all (our) options are open," said Ananth Kumar.
Jain said, "we will take the next step after discussing within the party. The next step will be taken after discussing all legal aspects."