Quote:
US terror investigators have become convinced that since going into hiding in Yemen, Awlaki has become highly active as the effective chief of al-Qa'ida in the Arabian Peninsula, the affiliate in Yemen and Saudi Arabia to the main terror network based in Afghanistan and Pakistan.
The focus on Awlaki intensified after links were found between him and Major Nidal Hassan, who was charged with the killing of 13 people at the Fort Hood army base in Texas last year, and with the young Nigerian Umar Farouk Abdulmutallab, who is accused of trying to blow up a Detroit-bound airliner on Christmas Day.