The Enforcement Directorate today issued fresh summons to Karti Chidambaram, the son of senior Congress leader P Chidambaram, after he skipped his appearance before it in connection with the INX Media money laundering case probe.Official sources said he has now been called by the agency on 16th of this month.<br/><br/>The investigating officer of the case had earlier this month summoned him to appear today.The central probe agency had registered a case against him and others in May last year under the provisions of the Prevention of Money Laundering Act.