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Little late on this one, but they got him.

ABC reported, via Michelle Malkin:

A man carrying a suspicious package was detained in Arlington National Cemetery this morning after police searched his backpack and found the materials as well as pro-al Qaeda literature, officials told ABC News.

Police believe he was carrying ammonium nitrate and spent ammunition for an automatic weapon. Ammonium nitrate has been used in terrorist bombs.

According to law enforcement sources, the man is a naturalized U.S. citizen. Initially he was thought to be of Ethiopian ethnicity.

The statements were found in a notebook that contained mostly notes for a financial class. There was also was a page containing words “al qaeda”, “Taliban rules”, “mujahidin and “defeated coalition forces.”

The man allegedly told police that there were other “devices” in the area and also the location of a vehicle.