A few quotes on the tip offs and their investigation
''The head of the federal criminal police, Holger Münch, told the public broadcaster ZDF that his office received a tipoff from Saudi Arabia in November 2023 that led authorities to launch āappropriate investigative measuresā.
Abdulmohsen had āpublished a huge number of posts on the internetā, Münch said, and also āhad contact with various authorities, making insults and even threats. However, he was not known to have committed acts of violence.ā
And
Der Spiegel magazine said the Saudi secret service alerted Germanyās spy agency BND last year to a post in which Abdulmohsen threatened Germany would āpay a priceā for its treatment of Saudi refugees.
And
Germanyās federal office for migration and refugees said it received a tipoff about the suspect last summer. āThis was taken seriously, like every other of the numerous tips,ā it said, adding that it had passed the tip on to relevant authorities.