The raids, in the western cities of Moenchengladbach, Braunschweig and Bremen, were aimed at the groups Invitation to Paradise and Islamic Culture Center Bremen, ministry spokesman Stefan Paris said in a statement.

The two are suspected of “working against the democratic order of Germany,” he added.

“It is necessary and important not to wait for a militant struggle in form of jihad before intervening against unconstitutional groups,” Paris said.

A security official, speaking on condition of anonymity in line with department policy, said dozens of private homes were searched, as well as religious schools and a store belonging to Invitation to Paradise that sells face-covering veils for women and caftans for men.

Police said they seized evidence during the raids, but would not comment further.