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In page Midhat Mursi:
"Umar is believed by U.S. authorities to have run the infamous Derunta training camp in Afghanistan where he is reported to have used dogs and other animals for his chemical experiments. He is also alleged to have written an explosives manual, and to have personally trained Richard Reid, the so-called "shoe bomber", as well as Zacarias Moussaoui. The manual is still in use by al-Qaeda operatives today.
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