Thus undated handout photo provided by the FBI shows Adnan Shukrijumah. Authorities believe that Shukrijumah met with one of the would-be suicide bombers in a plot to strike the New York subway system last year. Intelligence officials believe Shukrijumah, 34, is one of the top candidates to be al Qaeda's next head of external operations, the man in charge of planning attacks worldwide. The U.S. has offered up to $5 million for information leading to his capture. (AP Photo/FBI)

Thus undated handout photo provided by the FBI shows Adnan Shukrijumah. Authorities believe that Shukrijumah met with one of the would-be suicide bombers in a plot to strike the New York subway system last year. Intelligence officials believe Shukrijumah, 34, is one of the top candidates to be al Qaeda's next head of external operations, the man in charge of planning attacks worldwide. The U.S. has offered up to $5 million for information leading to his capture. (AP Photo/FBI)