Midhat Mursi al-Sayid Umar (Arabic: مدحت مرسي السيد عمر), also known as Abu Khabab al-Masri (Arabic: أبو خباب المصري; 29 April 1953 in Egypt – 28 July 2008 in Pakistan) was a chemist and alleged top bomb maker for al-Qaeda and part of Osama bin Laden's inner circle.
Although reported to have been killed in a U.S. attack in January 2006, he survived and intelligence officials believe he went on to attempt to resurrect al-Qaeda's program to develop or obtain weapons of mass destruction.
[1] On 28 July 2008, Mursi was killed in an American drone attack in South Waziristan, Pakistan.
[2] 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.