Senior party officials voted Friday to void the membership of Andreas Kalbitz, its chief in the eastern state of Brandenburg.
Last month the party ditched its chief spokesman after he allegedly declared himself to be a “fascist.”
Kalbitz, 47, has a long history of involvement in groups that promote a revisionist interpretation of Germany's war-time history and was photographed in 2007 at an event hosted by the HDJ, a neo-Nazi youth movement that’s since been banned.
He and Bjoern Hoecke, Alternative for Germany’s leader in Thuringia state, are considered influential figures on the party’s right wing.
Kalbitz, who was also the party’s caucus leader in the Brandenburg state assembly, told German news agency dpa that he plans to take legal action against the decision to expel him.