From the Instapundit:
EXPLOSIVE: Ft. Hood suspect reportedly shouted ‘Allahu Akbar’. (Via The BlogProf). On NPR I heard — I can’t find the story on their website yet — that he had given a presentation on the Koran at a professional conference where he claimed that unbelievers should be beheaded, burned, etc. to the discomfiture of the attendees.
UPDATE: Here’s the NPR segment. Key bit: