The prime suspect for the Berlin massacre was under covert surveillance for months as a possible terrorist threat until police let him slip through their grasp earlier this month.
Anis Amri, 24, a Tunisian asylum seeker who arrived in Germany last year, was investigated for “preparing a serious crime endangering national safety”, involving funding the purchase of automatic weapons for use in a terrorist attack.
Amri had been arrested earlier this year and was known to be a supporter of the terrorist group thought to be behind the Sousse terrorist attack in Tunisia, as well as being a suspected disciple of a notorious hate preacher.
The German authorities, who were on Wednesday facing serious questions about how Amri was still at large, tried to deport him in June, but because he had no valid papers proving his nationality he was allowed to stay.
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