As officials of the FBI wind up the probe into the 26/11 strikes, the US agency has questioned Fahim Arshad Ansari, arrested by the Uttar Pradesh Police last year, and confronted him with the lone surviving terrorist of Mumbai attacks, Mohammed Ajmal Amir Iman Kasab. The FBI agents, accompanied by central security agencies, quizzed Ansari and another Lashker militant Sabbauddin for several hours before winding up their Indian chapter of investigations and planning their next stage of probe in Pakistan, official sources said. The FBI had made the request through proper channels for questioning Ansari and Sabbauddin, militants of banned Lashker-e-Taiba, who were brought to Mumbai in December 2008 as a follow up to the probe into the 26/11 attacks, the sources said. During the questioning, 35-year-old Ansari, a resident of Navi Mumbai, allegedly told his interrogators about his training in Pakistan, including the 21-day 'Daura Aam' (ordinary tour) basic combat course which was followed by a rigorous three-month advanced 'Daura Khaas' (special tour) and later by 'Daura-e-Ribat' (intelligence course).