Berlin (CNN) Germany's domestic security agency has said it will put sections of the far-right Alternative for Germany (AfD) party under surveillance.

The country's Office for the Protection of the Constitution (BfV) announced Tuesday that it would focus on two elements: the AfD youth wing, "Junge Alternative" (JA), and the party's far-right politician Björn Höcke and his supporters.

BfV President Thomas Haldenwang said JA members showed ''clear evidence of an anti-immigration and particularly anti-Muslim attitude,'' which is contrary to Germany's democratic principles.

Haldenwang said Höcke and his supporters, known as "der Flügel" or "The Wing," propagate political rhetoric that violates Germany's constitutional protections of human dignity, democracy and the state of the law.

In a statement, Haldenwang said "The Wing" is aimed at "excluding and denouncing foreigners, migrants, Muslims in particular, and persons having a different political opinion and depriving them of almost all of their rights."

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