Source?
The list of names makes interesting reading.
I'll bet you anything - my children, even - that if and when this all is untangled (and understand that the organization leaders WANT the guy on the run dead) - I'll bet you anything that this cell was nurtured and facilitated by domestic leftists. Not necessarily for terrorism, but for multiculturalism, immigration, anti-Christianity, you name it.
The woman who first picked these killers up at Logan when they arrived from Chechnya had a "Coexist" bumper sticker on her Prius.
Bet on it.