The CBI on Tuesday registered a new case against Lok Sabha MP Karti Chidambaram. Former Finance Minister P Chidambaram's son Karti is accused of getting Indian visas to 250 Chinese nationals, in return for which he took a bribe of 50 lakhs. A close aide of Congress MP Karti Chidambaram has been arrested by the CBI. This action has been taken after yesterday's raid.