Mamdouh Mahmud Salim

Salim was trained as a communications engineer. He attended two meetings from August 11–20 in 1988, along with Osama bin Laden, Ayman al-Zawahiri, Mohammed Atef, Jamal al-Fadl, Wael Hamza Julaidan, and Mohammed Loay Bayazid and eight others, to discuss the founding of "al-Qaeda".

He was re-sentenced to life without parole in August 2010. He is now an inmate of the ADX Florence facility in Florence, Colorado.

Since then he has been convicted of attempted murder, after stabbing one prison guard during an attempted escape. He was sentenced to 32 years for the crimes. In 2008, however, a Federal Appeals judge ruled that the judge in the case was in error when he ruled that the stabbing was not part of a terrorism plot. He ordered resentencing.

Mamdouh Mahmud Salim (Arabic: ممدوح محمود سالم ‎, Mamdūḥ Maḥmūd Sālim; b. 1958 in Sudan) is a Sudanese co-founder of the Islamist terrorist network al-Qaeda. He was arrested on 16 September 1998 near Munich. On 20 December 1998 he was extradited to the United States, where he was charged with participating in the 1998 United States embassy bombings.

He was arrested approximately September 8, 1998, in Germany, and extradited to the United States. However, his joint bank account with Mamoun Darkanzali was not investigated, and the latter transferred the funds to a militant who would later participate in the 9/11 hijackings.

He is also credited by al-Fadl's testimony with a 1992 fatwa issued at the request of Al Qaeda leadership, described as pivotal in al-Qaeda's development as it provided the group with justification for the killing of Muslim civilians and bystanders in the course of killing Americans and other non-Muslim enemies. The fatwa is putatively based on one by the influential 14th-century Salafi scholar Ibn Taymiyyah ("Ibn al Tamiyeh") permitting the killing of Muslim supporters of the "Tartars" (Mongols) who threatened to invade the Mamluk Sultanate in Egypt. In testimony al-Fadl was asked:

According to Jamal al-Fadl, Salim instructed militant recruits in the works of Ibn Taymiyyah. Other allegations suggest he travelled to China, Japan or Hong Kong with Mohammed Loay Bayazid in 1990 to facilitate the purchase of communications equipment for the Sudanese government. In Khartoum, he travelled to Hilat Koko with Jamal al-Fadl in late 1993 or early 1994, and met with Amin Abdel Marouf to discuss chemical weapons.