Apparently.
"In a now deleted feed on X apparently belonging to Taleb A., he made anti-Islam statements and self-identified as a Saudi dissident. He spoke openly about renouncing his Islamic faith, expressed sympathy for the far-right Alternative for Germany (AfD) party and accused Germany of promoting the Islamization of the country.
…
Saudi authorities had previously warned their German counterparts about the suspected attacker on three occasions, a source with knowledge of the communications told CNN.
The first warning came in 2007 and was connected to concerns held by Saudi authorities that Taleb A. had expressed radical views of varying kinds, the source said.
Saudi Arabia considers the suspect a fugitive and requested his extradition from Germany between 2007 and 2008, the source said, adding that German authorities refused, citing concerns for the man’s safety should he return."
https://www.cnn.com/cnn/2024/12/21/europe/suspect-germany-christmas-market-attack