201624 October: Tata Sons removes Cyrus Mistry as executive chairman of the group holding company, appoints Ratan Tata as interim chairman, and disbands the group executive council. 25 October: Mistry, in a letter to the Tata Sons board, warns of an $18 billion write-down and alleges ‘shadow control’ by Tata trustees. 10 November: Tata Sons replaces Mistry as chairman of Tata Consultancy Services with Ishaat Hussain as interim chairman. Photo: Indranil Bhoumik/ Mint16 December: Nusli Wadia, Wadia group chairman who was removed as an independent director from the boards of Tata Motors and Tata Steel, files a defamation suit against Tata Sons and Ratan Tata, calling the allegations leveled against him libelous and defamatory. 12 January: Tata Sons names N. Chandrasekaran, CEO of Tata Consultancy Services Ltd, as its chairman.

Source: Mint October 23, 2017 23:15 UTC