Pakistani-American Lashkar-e- Toiba terrorist, David Coleman Headley, answered to all the questions of the National Investigation Agency (NIA) team in Chicago.<br/> <br/>The four-member team led by Loknath Bahera, questioned Headley face-to-face, eliciting information about his role in the Mumbai attacks, the wider conspiracy and all those involved in the carnage. <br/> <br/>A statement from the US Justice Department said, Headley and his counsel agreed to the meetings with the Indian investigators and Headley answered the Indian investigators' questions over the course of seven days of interviews. It also added that there were no restrictions on the questions posed by Indian investigators. <br/> <br/>Meanwhile, Indian Ambassador to the US Meera Shankar said, the team has concluded questioning of Mumbai terror suspect and has headed back home. <br/> <br/>Headley had, on March 18, pleaded guilty to conspiring in the 26/11 Mumbai attacks in November 2008, as well as later planning to attack a Danish newspaper, but struck a deal with US authorities in a plea bargain that saved him from the death penalty and extradition to India. <br/> <br/>The plea agreement had however said Headley would cooperate with foreign authorities and can be interviewed by them only on US soil. India had asked the US to grant access to the 49-year-old Headley, being held in the federal lock-up Metropolitan Correctional Centre in Chicago. <br/> <br/>In a separate statement issued by the US Embassy in New Delhi, the US Ambassador to India Timothy Roemer hailed the cooperation between the Indian team and their American counterparts throughout this process. <br/> <br/>Roemer, who is currently in Washington, said the Indian team had been granted direct access to David Headley, and had conducted a series of interviews with him related to terrorist activities in India. The team arrived in the US on May 31 and their interviews with Headley began on June 3.<br/>