An FIR was lodged against nearly 50 celebrities, including Anurag Kashyap, Ramchandra Guha, Mani Ratnam and Aparna Sen, who had written an open letter to Prime Minister Narendra Modi raising concern over the growing incidents of mob lynching, police said. The case was lodged after an order was passed by Chief Judicial Magistrate Surya Kant Tiwari two months ago on a petition filed by local advocate Sudhir Kumar Ojha.