Awlaki, who may have briefly served as a Muslim chaplain at George Washington University according to his now-defunct website and a 2001 article by National Geographic News, also lashed out at Muslims who condemned the murders, branding them as traitors and hypocrites. "The Muslim organizations in America came out in a pitiful chorus condemning Nidal’s operation. Nidal has killed soldiers who were about to be deployed to Iraq and Afghanistan in order to kill Muslims. The American Muslims who condemned his actions have committed treason against the Muslim Ummah and have fallen into hypocrisy."
Muslims in Awlaki's school, often referred to as salafis (a term that refers to the early followers of the prophet Mohammed), practice takfir, which brands fellow Muslims they disagree with as apostates deserving death.
ABC News cited unnamed US investigators as saying that the contacts with al-Awlaki were deemed benign and didn't involve direct calls to illegal action. "We don't have any indication that (Hasan) was directed, we don't have any indication that there were co-conspirators but, once again, this is fairly early on in what may be a complex and long-term investigation," a senior investigative official said.