The Enforcement Directorate, ED, has registered a money laundering case against Karti Chidambaram, son of former finance minister P Chidambaram, and others, taking cognisance of a recent CBI FIR against them. <br/><br/>Officials said the central probe agency registered an Enforcement Case Information Report, ED's equivalent of a police FIR, against the accused named in the CBI complaint including Karti, INX media and its directors, Peter and Indrani Mukerjea, and others.