Principal Sessions Judge (PSJ) G Chockalingam on Tuesday issued non-bailable warrant (NBW) against Siddarth Varadharajan, editor of The Hindu, in connection with a defamation complaint filed against him. The complaint pertained to publication of a statement by DMK chief M Karunanidhi on the issue relating to the ban on the release of Vishwaroopam. Contending that the statement defamed the CM, Public Prosecutor ML Jegan filed the complaint.