Al-Hakim was the person who appeared in an August 2006 as-Sahab (al-Qaeda) video to announce the merger of al-Qaeda with part of the Egyptian caliphist group al-Gama'a al-Islamiyya. He is identified in that video as Muhammad Khalil Hasan al-Hukaymah ( محمد خليل حسن الحكايمة ) and more briefly as Muhammad Khalil al-Hukaymah (محمد خليل الحكايمة) and as Abu Jihad al-Masri. In that video al-Hukaymah is introduced by Ayman al-Zawahiri, who is also Egyptian and who was the leader of the rival group al-Jihad al-Islami.