Nasar first moved to London in 1994, and brought his family along in mid-1995. It is possible that he fled Spain because of suspicions he was involved in the 1995 Islamist terror bombings in France. For a while, Nasar edited "al-Ansar", the most important jihadi magazine at the time, with ties to the Algerian Armed Islamic Group (GIA). Nasar left the journal in 1996, partly due to disagreements with the new GIA leadership in Algeria and partly as a result of a conflict with its chief editor, Umar Mahmud Uthman Abu Umar, better known as Abu Qatada al-Filastini. The latter is widely regarded as al-Qaeda's principal cleric in Europe.