garymortimer writes with this excerpt from Sky News as carried by Yahoo UK: "German authorities are holding two men of Tunisian origin who they say are facing possible charges for the 'preparation of a serious, state-threatening act of violence.' Prosecutors say the men are suspected of 'procuring information and objects to commit Islamic extremist explosive attacks with remote-controlled model airplanes,' prosecutors added. Police investigating the terror plot on Tuesday launched a series of raids in Stuttgart and Munich in southern Germany and Saxony in the east. They also carried out one raid in Belgium. No-one was arrested. The suspects had been under surveillance for more than a year and authorities had recently detected 'an increased interest in explosives and model aircraft,' according to an unnamed security source quoted by a German news agency."