The Bharatiya Janata Party (BJP) on Friday filed a Public Interest Litigation (PIL) in the Calcutta High Court demanding NIA probe over the anti-national slogans raised in the Jadavpur University.Jadavpur University Vice Chancellor Suranjan Das, who called on West Bengal Governor K.N. Tripathi amid row over pro-Afzal guru slogans, earlier today, said that he was against filing First Information Report against any student as the varsity has always stood for freedom of expression and autonomy.