Karti Chidambaram, the son of senior Congress leader P Chidambaram, was questioned for about 11 hours by officials of the Enforcement Directorate (ED) in connection with the INX Media money laundering case yesterday. <br/><br/>Karti Chidambaram was summoned by the agency to appear before the Investigating Officer of the case. Official sources said, Karti Chidambaram was asked a number of questions on his role in the case and his statement was recorded under the Prevention of Money Laundering Act (PMLA).<br/><br/>Karti Chidambaram's authorised representative had met the Investigating Officer of the case on the last two occasions and the central probe agency had then asked him to appear in person.<br/><br/>The central probe agency had registered a case against him and others in May last year. Last week, the ED had also searched the premises of Karti Chidambaram and those associated with him in a separate money laundering case pertaining to the Aircel-Maxis deal.<br/>