British intelligence service MI6 was involved in monitoring the suspects prior to their arrests, the reports said. A raid by Spanish police in the home of Yalcin, who is Turkish, turned up a video which was said to show him piloting a large remote-controlled plane. The aircraft drops two packages from the air to the ground. Police also found explosives and parts for three paragliding machines, said El Pais.
A Spanish judge had Yalcin arrested on possession of explosives for terrorist ends, and had Adamov and Magomedov, who are both arrested for explosives possession and belonging to a terrorist organization. Magomedov is allegedly a former Russian special forces member and an explosives expert, and the two other suspects are both Chechen. All three men are thought to have connections with al Qaeda. (ANSAmed).