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The terrifying threats were made against the Italian police force after Anis Amri, the jihadi responsible for the atrocity, was shot by an officer near Milan.

Now, Rome’s police commissioner has warned every station in the country to be aware for threats against their officers.

Niccolo D'Angelo said: “In a well-known social network, there have been threats of retaliation against Italian police for the killing of the author of the massacre of Berlin.