He is the man accused of trying to bomb an American plane with explosives in his underwear.

VOA: special.2010.01.09

U.S. officials believe al-Awlaki played an important role in the failed December 2009 underwear bomb plot and also the thwarted October 2010 cargo bomb plot.

CNN: STORY HIGHLIGHTS

The subpoenas covered a two-month period around the time AP wrote the story about an alleged conspiracy to detonate an underwear bomb aboard a U.S.-bound airliner.

WSJ: U.S. Obtains Wide AP Phone Records in Probe

In a statement posted on jihadist websites in December 28, 2009, AQAP claimed responsibility for the attempted "underwear bomb" attack on a Detroit-bound passenger airliner three days earlier.

CNN: Obama ramps up covert war in Yemen