Saif al-Adel

Saif al-Adel, the Egyptian militant who for years functioned as al-Qaeda's de facto leader and one of its last surviving founders, has died, according to a Wikidata record dating his death to 21 September 2026. He was around 66 years old. As of this writing, no reputable news organisation, government agency or al-Qaeda affiliated outlet has published a confirmed account of where or how he died, and the cause of death has not been made public. Given the extreme secrecy surrounding his final years, further confirmation may take time to emerge, and this page will be updated as verified details become available.

Born Mohamed Salah al-Din al-Halim Zaidan in Egypt in 1960, he trained as an explosives officer in the Egyptian army's El-Sa'ka special forces before being expelled and swept up in a crackdown on Islamists in 1987. He left for Afghanistan the following year, joining the Arab fighters resisting the Soviet occupation under Maktab al-Khidamat, the organisation from which al-Qaeda emerged. Within that milieu he built a reputation as a disciplined, technically minded soldier rather than an ideologue, running training camps, heading al-Qaeda's media operation in its early days, and taking charge of the group's military committee after the death of Mohammad Atef in 2001.

His name became attached to some of al-Qaeda's most consequential episodes, including a US indictment over the 1998 embassy bombings in Kenya and Tanzania, alleged links to the 2002 kidnapping and killing of journalist Daniel Pearl, and the 2003 Riyadh bombings. For most of the period after the 2001 US invasion of Afghanistan he was reported to be living under a form of restricted residence in Iran, watched over by the Islamic Revolutionary Guard Corps, a location that intelligence agencies and journalists debated for two decades without ever fully confirming his movements. A commentary published earlier in 2026 observed that he was widely believed to have been

living in Tehran under the protection of the regime's Islamic Revolutionary Guard Corps

, though even close observers could not say for certain whether he remained there.

After Ayman al-Zawahiri was killed in a 2022 American drone strike, a 2023 United Nations assessment concluded that leadership of al-Qaeda had passed to Saif al-Adel in practice, even though the Taliban's sensitivities about Zawahiri's death in Kabul and al-Adel's own presence in Shia-led Iran kept him from being formally proclaimed emir. He spent his final years reportedly tightening his hold over field commanders in Yemen, Syria and Somalia and trying to shift the group's centre of gravity toward the Arabian Peninsula. His family life was itself touched by the movement's losses: his son,

Khaled Saleh al-Din Zidane, a senior member of Al-Qaeda in the Arabian Peninsula and the son of the group's de facto leader, Saif al-Adel, has died

, in 2024, a death AQAP's own magazine confirmed without disclosing the circumstances.

Saif al-Adel's death closes out the roster of al-Qaeda's founding generation, following Osama bin Laden in 2011 and Zawahiri in 2022. He remained on the FBI's most wanted list for terrorism throughout his life, with a reward of up to ten million dollars offered for information on his whereabouts, and he was never captured or tried. His passing leaves al-Qaeda's central leadership more uncertain than at any point since the group's founding, with no publicly known successor.