Spanish police have arrested three Moroccans alleged to be part of the logistical wing behind the devastating Madrid train bombings. Two of the men were detained in Madrid and the third in the southern city of Granada, police said. They are suspected of selling drugs and guns to help the bombers who killed 191 people on 11 March 2004. Nearly 30 people have been detained in connection with the attacks, although the main suspects blew themselves up. Reports in the Spanish press say the weapons given to the bombers appeared in a video discovered shortly after the attacks that showed armed suspects claiming responsibility for the blasts. A parliamentary inquiry into the attacks - which injured more than 1,500 people - is still struggling to conclude its investigation.