Mistry had stepped down from all Tata Group companies on December 19, saying it was time to be "more incisive in securing the best interest of the Tata Group". In his resignation letter, he had alleged that Ratan Tata had staged "an illegal coup" on October 24, the day he was sacked from his post in the holding company. Tata Sons has accused Cyrus Mistry of misleading the 2011 selection committee set up to appoint Ratan Tata's successor.