"...contained more than 80 grams of PETN...sewn into Abdulmutallab's underwear..."
"...Investigators believe Abdulmutallab was connected to al Qaeda by the same radical imam, American-born Anwar Awlaki, who is linked to the American Army major accused of opening fire at Fort Hood in November..."
According to investigators, the bomb used yesterday was built in Yemen by a top al Qaeda bomb maker.