Police have arrested 25 people accused of planning to overthrow the German government in a series of raids across the country.

The group is accused of trying to instate Heinrich XIII – a descendant of German royalty – as their leader. Among those arrested were members of the Reichsbürger (which translates as citizens of the Reich), a disparate movement of groups and individuals, including some with extreme-right views.

Reichsbürger adherents have been stopped from attempting violent action before, but this latest incident and its alleged members have caused greater concern.

A former member of the German parliament, who was also a judge until shortly after her arrest, was among the group. Birgit Malsack-Winkemann was a parliamentary deputy for the far-right Alternative für Deutschland (AfD), but left the party in 2021.

Several former soldiers were also arrested in connection with the coup plot. This is a cause for great concern for law enforcement, as such ties give possibly dangerous extremists access to weapons and trained individuals.

Earlier in 2022, Heinrich XIII was reported in the German press as being close to the Reichsbürger scene and a believer of conspiracy theories, prompting his family, the House of Reuss, to publicly distance themselves from him.

He does not, however, have a high profile, apart from a 2019 speech at the WorldWebForum conference in Switzerland, which contained an antisemitic and historical revisionist message. The involvement of an aristocrat speaks to the monarchist motivations of some Reichsbürger, who wish to reinstate a Kaiser as head of state.

What do the Reichsbürger believe?

The Reichsbürger do not have a centralised structure but are estimated to have at least 21,000 supporters. Their key belief is that the current German state (the Bundesrepublik or Federal Republic), its institutions and democratically elected representatives are not legitimate.