A German citizen employed by the countrys domestic intelligence agency was arrested Tuesday for allegedly making Islamist declarations on the internet and sharing internal material, Reuters reports.

A spokesman the Federal Office for the Protection of the Constitution, known as BfV, did not confirm a report in Die Welt newspaper that the 51-year-old employee had planned to explode a bomb at the agency’s central office in Cologne or provide details on the man’s position at the agency.

“There is no evidence to date that there is a concrete danger to the security of the BfV or its employees,” the spokesman told the news agency.

The BfV said the man had previously not attracted any attention and “behaved inconspicuously during his employment process.”

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