India has said that investigation into the Pakistan born terror mastermind Headley and Lashkar-e-Taiba activist Tahawur Rana who are suspected to be involved in 26/11 Mumbai terror attack is going on satisfactorily.<br/><br/>Talking to newsmen on the sidelines of India-Africa carbon summit in New Delhi today, External Affairs Minister S.M.Krishna said that the US Investigating Agency FBI is cooperating with Indian Intelligence Agency.He said that a report in this matter is anticipated very soon.<br/><br/>AIR correspondent reports that the FBI sleuths are already in the capital for further investigation and cooperation.<br/><br/>