Mahesh Bhatt has written a letter to Prime Minister Dr Manmohan Singh in which the film maker said he felt a sense of great betrayal over the manner in which his son was handled by investigators despite sharing information about US terror suspect David Headley.<br/>Mr Bhatt told PTI that he has narrated the chain of events the family had to go through after his son did what was expected of him as a responsible Indian citizen. Alleging that the investigating agencies had leaked selective information to the media, which projected his son in a wrong way, the film maker said taking advantage of the situation right wing forces had stopped screening of his movie 'Tum Mile' in Gujarat.<br/>Bhatt said he had not asked for any security but reported to Mumbai police about the level of threat he, his office and his movie faced.<br/>