Maaßen is suing the Office for the Protection of the Constitution. He doesn't want data collected about him.

Maaßen accuses Federal Interior Minister Nancy Faeser of using the domestic secret service “to observe government opponents,” as he told the dpa. “Opponents of the government are not enemies of the constitution,’ said Maaussen. The Cologne Administrative Court could not initially be reached on Saturday to confirm receipt of the lawsuit.