Germany needs an "Islam law" to regulate Muslim religious communities and ensure that what is being preached in mosques around the country is "transparent," according to leading conservative politician Jens Spahn.

Spahn, a member of the executive committee of Chancellor Angela Merkel's Christian Democrats (CDU), told the Funke Media Group on Thursday that authorities "had to know what happens in mosques," saying that Muslim sermons in German would help diminish prejudice.

In an interview with DW, Spahn cited the example of Austria as a precedent: "The Austrians have had an Islam law since imperial times, and there things function better. We could learn from them."

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