Chidambaram-INX Paper Trail?

P Chidambaram has now been sent to CBI custody. His lawyers consisting of Congress heavyweights put up a big fight, but it did not work. The CBI will now get a chance to further question him on allegations that his son received 'kickbacks' in exchange for Mr Chidambaram granting illegal clearances to the firm INX Media. On Reality Check, NDTV accesses documents, a letter written by the Enforcement Directorate to the CBI, that kicked off the CBI investigation.