BJP President Nitin Gadkari today demanded a thorough probe to find out the role of all pseudo-secularists who helped 26/11 accused David Coleman Headley. <br/><br/>Speaking to PTI in Nagpur he said there should be a proper investigation into the strong connections that Headley had built in India. <br/><br/>The BJP chief feels Headley could not have visited India so many times and carried out his clandestine activities for such a long time without local help.<br/>