Arabia) as well as ambassador to Pakistan, while his own brother was Azzam Pasha, the founding secretary-general of the Arab League (1945–1952). From his maternal side yet another relative was Salem Azzam, an Islamist intellectual and activist, for a time secretary-general of the Islamic Council of Europe based in London. The wealthy and prestigious family is also linked to the Red Sea Harbi tribe in Zawahir, a small town in Saudi Arabia, located in the Badr. He also has a maternal link to the house of Saud: Muna, the daughter of Azzam Pasha (his maternal great-uncle), is married to Mohammed bin Faisal Al Saud, the son of the late King Faisal. Ayman Al-Zawahiri said that he has a deep affection for his mother. Her brother, Mahfouz Azzam, became a role model for him as a teenager. He has a younger brother, Muhammad al-Zawahiri, and a twin sister, Heba Mohamed al-Zawahiri. Heba became a professor of medical oncology at the National Cancer Institute, Cairo University. She described her brother as "silent and shy". Muhammad was sentenced on charges of undergoing military training in Albania in 1998. He was arrested in the UAE in 1999, and sentenced to death in 1999 after being extradited to Egypt. He was held in Tora Prison in Cairo as a political detainee. Security officials said he was the head of the Special Action Committee of Islamic Jihad, which organized terrorist operations. After the Egyptian popular uprising in the spring of 2011, on March 17, 2011, he was released from prison by the Supreme Council of the Armed Forces, the interim government of Egypt. His lawyer said he had been held to extract information about his brother Ayman al-Zawahiri. On March 20, 2011, he was re-arrested. On August 17, 2013, Egyptian authorities arrested Muhammad al-Zawahiri at his home in Giza. He was acquitted in 2017. Youth Ayman al-Zawahiri was reportedly a studious youth. He excelled in school, loved poetry, and "hated violent sports", which he thought were "inhumane." Al-Zawahiri studied medicine at Cairo University and graduated in 1974 with gayyid giddan, or roughly on par with a grade of "B" in the American grading system. Following that, he served 1974–1978 as a surgeon in the Egyptian Army after which he established a clinic near his parents in Maadi. In 1978, he also earned a master's degree in surgery. He spoke Arabic, English, and French. Al-Zawahiri participated in