The United States has alerted its allies to watch out for attempts by Osama bin Laden`s al Qaeda network to produce weapons of mass destruction, FBI chief Robert Mueller said Monday. Mueller, in Manila, raised the concern in talks with Philippine officials before flying back to the United States at the end of a tour of Southeast Asia. He has said the region is a potential sanctuary for members of al Qaeda, prime suspects in the September 11 attacks on New York and Washington. Full Story