he was arrested in April and he was an alleged lieutenant of Jamal Ahmidan, who was suspected of having helped acquire the explosives.
While a prisoner in El Castellón, he established a "special friendship" with imam Abdelbaki Es Satty, main suspect of the 2017 Barcelona attacks.
He was arrested in Belgium in February 2005 by the Belgian Police, he allegedly set the date for the attacks and was in Spain for the last-minute preparations.
Haski, from Morocco, but having been "a long time resident of Molenbeek"[8] (Brussels), was arrested in the Canary Islands in December 2004.
[9] Fouad el-Morabit – guilty, 12-year sentence was being held in March 2004 for allegedly belonging to the Madrid terror cell, he also had contacts with Rabei Osman.
Mohamed Larbi Ben Sellam, guilty, 12-year sentence, was allegedly in charge of bringing propaganda material to meetings of the cell.
Basel Ghalyoun – 26, guilty, 12-year sentence, was allegedly had links to Rabei Osman and the presumed ideological mastermind, Serhan Ben Abdelmajid Fakhet, a Tunisian who also died in the apartment blast.
Abdelilah el-Fadual el-Akil, guilty, nine-year sentence, was alleged close associate of Jamal Ahmidan, he had worked at a house on the outskirts of Madrid where some bombs had been made there.
[10] Rául González Peláez – guilty and given a 5-year sentence, was allegedly helped him gain access to the explosives in exchange for cocaine.
Sergio Alvarez Sánchez – guilty, 3-year sentence travelled in January 2004 to Madrid with a sports bag containing up to 15 kg (33 lbs) of explosives for Jamal Ahmidan.
Antonio Iván Reis Palacio – guilty, given 3-year sentence, transported explosives to Madrid, Spain.
Rabei Osman – arrested in Milan, Italy in June 2004 by Italian State Police for supporting terrorism in Europe.
Brandon Mayfield was arrested 6 May 2004 on a material witness charge, on the basis of a fingerprint found after 11 March 2004 Madrid attacks.
[13] Mustafa Setmariam Nasar – arrested in Quetta, Pakistan in October 2005 as he was shopping for breakfast, close to the Pakistani-Afghan border by the Pakistani Inter-Services Intelligence.
The FBI had offered a US$5 million reward for his capture and President Pervez Musharraf of Pakistan stated in that his country has received a huge amount of substantial sums in bounties from American authorities.