Filmmaker Vivek Agnihotri will be releasing his movie 'The Tashkent Files' towards the end of this year. It is an investigative movie on the mysterious death of former prime minister of India Lal Bahadur Shastri. The movie will feature eminent actors such as Naseeruddin shah and Mithun Chakraborty, Agnihotri has clarified that the movie will be an investigative drama not a biopic.