He had been sentenced in November 2018 to two years and nine months imprisonment for supporting a terrorist organization and planning an attack with contacts with a militant in Yemen and working on the construction of suicide belts.
He was previously investigated for planning a terrorist attack, and reported to German authorities by a foreign intelligence service.
After publishing several Islamic State-related symbols and flag on his personal Facebook profile in 2017, Abdullah al-H. H. was investigated as a dangerous radicalized Islamist, who can "carry out an attack at any moment".
Investigators discovered that he was planning to join the Islamic State, had contacts with a militant in Yemen and was working on the construction of suicide belts; al-H. H. was then taken into custody.
[3][4] In the aftermath, it was debated in the Bundestag (Federal parliament of Germany) why the Syrian, whose asylum application had been rejected by authorities, had not been deported from the country.