Allegations have flown thick and fast ever since Cyrus Mistry was ousted as Chairman of the fabled Tata Group.
Mistry, who is locked in a boardroom tussle with the Tatas, alleged Singh had a role in the AgustaWestland chopper scam as it happened when he was the Defence Secretary in 2010.
Cyrus Mistry today escalated his war of words with Tatas by accusing Vijay Singh, a nominee director on the Tata Sons board, of cooking up theories "to defend his role in the conspiracy" hatched by Ratan Tata to sack him as the chairman.
Mistry did not attend a board meeting of Tata Consultancy Services (TCS) in the morning and was also not present at Tata Sons' first board meeting since his removal on October 24.