One of the accused in the Punjab National Bank (PNB) alleged fraud case, involving diamantaire Mehul Choksi, has sought to join the probe from the US through video conference. Sunil Varma, head of International Business at Gitanjali Gems Limited, through his lawyer Girish Kulkarni, has approached the special CBI court, stating he is ready to cooperate by appearing before a consulate in the US and face ED officials via video conference. Varma is a green card holder and as a qualified chartered accountant, has his business interests in US, he has said in his application. The ED, in its reply filed on Thursday, said Varma has been an absconding accused and is required to join the probe.