Mr Haasan says that if the ban on his controversial film Vishwaroopam is not lifted, he might have to look for a "secular state" and that can be out of the country.
"Vishwaroopam screenings cancelled before starting and even stopped mid-show all over Tamil Nadu What a sad day. What a horrible week. Taliban Tamil Nadu," Siddharth tweeted.
"Heartbreaking to see the greatest Tamil actor of all time talking about leaving Tamil Nadu, about bankruptcy and about unfair persecution," he added.
The Madras High Court on Tuesday ruled in favour of Vishwaroopam and lifted the ban by the state government. It, however, said the administrative step was to be taken by the government.
The mega-budget film was due to release January 25, but the Tamil Nadu government banned the film following fears of law and order situation. The ban was further extended to Kerala and Andhra Pradesh.