Authorities suspected that Sief Allah H. had travelled to conflict zones and tried to replace passports that might contain stamps or entry visas which might indicate terrorist activities.
German authorities also asked their Tunisian counterparts for information on him and were told that he was suspected of being a follower of Islamic ultra-conservative Salafi ideology.
In August 2017 she was unable to travel to Syria due to children from a previous marriage, so she bought a flight ticket to Istanbul for her husband.
[8] On 1 August 2018, prosecutors charged Sief Allah H., who was in custody, with "planning a serious act of violence against the state" and membership in a terrorist organisation,[9] and in March 2020, the Düsseldorf OLG court sentenced him to 10 years imprisonment.
[10] The interior minister of North Rhine-Westphalia Herbert Reul (CDU) stated that the potential danger the suspect posed was "relatively high".