Abu-Yusuf al-Muhajir is Egyptian. He was born on September 7, 1986. He is also called Muhammad Ibrahim ‘Abd al-Sata’ar Abu al-Asad. He is an explosives expert. He is a former member of Tawhid w’al Jihad-Egypt (TWJ-Egypt), an extremist group active in the Sinai Peninsula in 2004-06, and which reconst