Alleged Ft. Hood Gunman May Have 9/11 Mosque Link

The 2007 picture provided by the Uniformed Services University of the Health Sciences shows Nidal...

The 2007 picture provided by the Uniformed Services University of the Health Sciences shows Nidal Malik Hasan when he entered the program for his Disaster and Military Psychiatry Fellowship. Federal agents, military investigators and Texas Rangers are investigating whether the gun used in the Fort Hood massacre was purchased at the "Guns Galore" shop in Killeen, Texas, according to the store co-manager.

(Uniformed Services University of the Health Sciences/AP Photo)
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A key U.S. senator said Sunday he would begin an investigation into whether the Army missed signs that the man accused of opening fire at Fort Hood had embraced an increasingly extremist view of Islamic ideology.

Sen. Joe Lieberman's call for the investigation came as word surfaced that Maj. Nidal Malik Hasan apparently attended the same Virginia mosque as two Sept. 11 hijackers in 2001, at a time when a radical imam preached there. Whether Hasan, an Army psychiatrist, associated with the hijackers is something the FBI will probably look into, according to a law enforcement official who spoke on condition of anonymity because the investigation is ongoing.

Classmates participating in a 2007-2008 master's program at a military college complained repeatedly to superiors about what they considered Hasan's anti-American views. Dr. Val Finnell said Hasan gave a presentation at the Uniformed Services University that justified suicide bombing and told classmates that Islamic law trumped the U.S. Constitution.

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Another classmate said he complained to five officers and two civilian faculty members at the university. He wrote in a command climate survey sent to Pentagon officials that fear in the military of being seen as politically incorrect prevented an "intellectually honest discussion of Islamic ideology" in the ranks. The classmate also requested anonymity because the investigation is ongoing.

Lieberman, chairman of the Senate Homeland Security and Governmental Affairs Committee, wants Congress to determine whether the shootings constitute a terrorist attack.

"If Hasan was showing signs, saying to people that he had become an Islamist extremist, the U.S. Army has to have zero tolerance," Lieberman, an independent from Connecticut, said on "Fox News Sunday." "He should have been gone."

Authorities continue to refer to Hasan, 39, as the only suspect in the shootings that killed 13 and wounded 29, but they won't say when charges would be filed and have said they have not determined a motive. Hasan, who was shot by civilian police to end the rampage, was in critical but stable condition at an Army hospital in San Antonio.