A series of security blunders left a failed Tunisian asylum seeker free to carry out the Berlin attack, UK-based news outlet reported.
According to Daily Mail, German security services face difficult questions after it emerged that Anis Amri, a lifelong criminal, should have been deported months ago.
The 24-year-old, who has a 100,000 euro reward on his head, was under the surveillance of German intelligence for several months following his arrival in the country in 2015.
He had been arrested three times this year and his asylum application was rejected, but deportation papers were never served and he disappeared, the report said.
The Tunisian radical was known to be a supporter of Islamic State and to have received weapons training.
He also tried to recruit an accomplice for a terror plot – which the authorities knew about – but still remained at large.
He was under investigation for planning a ‘serious act of violence against the state’ and counter-terrorism officials had exchanged information about him last month.
Reports suggest intelligence services might have even lost track of Amri as recently as just a few weeks ago after he went underground.
The potentially fatal mistakes heaped further shame on the German security services, who wasted several hours questioning an innocent Pakistani asylum seeker in the aftermath of the truck rampage, which killed 12 shoppers and wounded 48.