Germany's justice minister has fallen victim to the rules he himself championed against online social media, as one of his tweets was deleted following several complaints, Bild daily reported Monday.

The tweet dated back to 2010, when Heiko Maas was not yet minister.

In the post, he had called Thilo Sarrazin, a politician who wrote a controversial book on Muslim immigrants, "an idiot".

Maas told Bild on Monday that he "did not receive any information from Twitter about why the tweet was deleted, or whether it would be deleted from Twitter."

But he added that "there are things that I would no longer tweet today."

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