Excerpt:

The radical circles Anis Amri moved in were well known to German officials, but that wasn't enough to stop him.

Amri, the suspect in Monday's deadly Berlin attack who was killed in a Milan shootout on Friday, first came to the attention of state intelligence officials last year, security officials say. Shortly after he was registered as an asylum seeker in a small town of North Rhine-Westphalia, the Tunisian began showing up in the entourage of a radical Iraqi-born preacher, Abu Walaa, whom intelligence officials say they had been watching for some time.

Soon after that, Amri visited Fussilet 33 e.V., a Berlin-based Muslim association that German intelligence agencies see as one of the capital's main meeting groups for adherents of the fundamentalist Salafi branch of Islam, other security officials said.


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