Jörn Dornau is alleged to have violated EU sanctions and circumvented export bans to Belarus. The police arrested him within the state parliament. His immunity had beforehand been lifted.
https://www.spiegel.de/politik/deutschland/razzia-bei-afd-landtagsabgeordneten-aus-sachsen-a-c6087282-a727-4c21-8df3-d24af5056e41#ref=rss