A German citizen employed by Germany’s domestic intelligence agency has been arrested on accusations that he made Islamist declarations on the internet and revealed internal agency material, the agency said on Tuesday. The man is accused of making Islamist statements on the internet using a false name and of revealing internal agency material in internet chat rooms Intelligence agency spokesman A spokesman for the Bundesverfassungsschutz (BfV) declined to provide details on the man’s position at the agency or say when he joined. He also declined to comment on a report in Die Welt newspaper that the 51-year-old had planned to explode a bomb at the agency’s central office in Cologne. “There is no evidence to date that there is a concrete danger to the security of the BfV or its employees,” he said. “The man is accused of making Islamist statements on the internet using a false name and of revealing internal agency material in internet chat rooms.” The suspected mole also offered to share sensitive data about the BfV which could have endangered the agency’s work, the spokesman said, without elaborating. Der Spiegel magazine reported on its website that the agency first became aware of the man’s activities about four weeks ago. German triple agent started spying for US and Russia because he felt ‘under-appreciated’ The spokesman said the suspect had not previously attracted attention, adding: “The man behaved inconspicuously during his employment process, training and in his area of responsibility.” German authorities have ramped up their surveillance of potential militant Islamist groups and individuals after two attacks claimed by Islamic State (IS) in July. The BfV estimates there are about 40,000 Islamists in Germany, including 9,200 ultra-conservative Islamists known as Salafists, Hans-Georg Maassen, who leads the agency, said earlier this month. Germany arrests three Syrians suspected of involvement in Islamic State ‘mission’ “We remain a target of Islamic terrorism and we have to assume that IS or other terrorist organisations will carry out an attack in Germany if they can,” he said at the time. Police have arrested several suspected IS sympathisers in recent weeks, including a 20-year-old Syrian refugee who had tried to cross into Denmark with potential bomb-making materials.