Central Bureau of Investigation, CBI today questioned Karti Chidambaram, the son of former Union Minister P Chidambaram, for the second time in a corruption case of alleged clearance given to a media group. <br/><br/>Karti was questioned at CBI headquarters in New Delhi. His three alleged associates were also questioned in the case related to alleged irregularities in Foreign Investment Promotion Board (FIPB) clearance to INX Media. <br/><br/>In May, an FIR was registered by the CBI against Karti and INX Media along with eight others for alleged irregularities in FIPB clearance for receiving FDI in 2007 when P Chidambaram was the Finance Minister.