The Central Bureau of Investigation has issued a look-out circular against Karti Chidambaram son of former union minister Chidambaram. Immediately after the circular was issued, he moved the Madras High Court challenging the same. The circular issued against Karti has been issued to all airports. This means he will not be allowed to leave the country. In the High Court he has challenged the same and the matter has been posted for Monday for further hearing.