Intelligence experts in Washington are increasingly concerned that the gunman known as the "psycho-sniper" could be a terrorist with links to Islamic terror groups. From the evidence gathered so far, which includes a handwritten note by the gunman, investigators think English may not be his first language. The shootings, which have left eight dead in fewer than 12 days, coincided with a warning that Osama bin Laden's al Qaeda network is planning new attacks. The FBI warned last Wednesday that supporters of Bin Laden were "targeting key sectors of the US economy" and has long suspected that a number of...