Excerpts from the 1997 annual report of Germany's Office for the Protection of the Constitution (Bfv PDF Print E-mail
The German security agency, the Office for the Protection of the Constitution, Bfv, wrote in its 1997 annual report:

One of the main tasks of the Iranian secret service is to keep an eye on Iranians living in Germany who oppose the regime. Its top priority is to keep surveillance on the People’s Mojahedin of Iran and their political arm, the National Council of Resistance.