Industrialist Nusli Wadia, who is an independent director on some Tata group companies, has filed a Rs 3,000-crore defamation suit against Ratan Tata, Tata Sons and its directors.

According to sources close to Wadia, the suit was filed at the Bombay High Court yesterday.

Wadia, who is independent director in Tata group firms, including Tata Motors, Tata Steel and Tata Chemicals, is facing vote by respective shareholders of the companies to a resolution moved by Tata Sons seeking his removal from the boards.