WASHINGTON (AP) - The suspected Fort Hood shooter has participated in homeland security conferences since 2008 at George Washington University while based in the Washington area.

Most recently, Army psychiatrist Nidal Malik Hasan was listed as an attendee in January for a conference on new security priorities for the Obama administration.

Frank Cilluffo, director of the university's Homeland Security Policy Institute, says Hasan was never affiliated with the school. He attended sessions as a disaster and preventive psychiatry fellow at the Uniformed Services University School of Medicine.

Cilluffo says he remembers Hasan wore Army fatigues to conferences, which seemed odd at the time. Cilluffo says he remembers cutting Hasan off once for rambling, though he doesn't remember the subject.

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