There was also a search in Mecklenburg-Western Pomerania on Wednesday in connection with nationwide investigations into the "Reichsbürger" milieu.
The dpa learned this from security circles.
On request, the Ministry of the Interior in Schwerin did not provide any information on the location and extent of the police measures.
Schwerin/Karlsruhe - The action was part of a nationwide search by order of the Federal Prosecutor's Office as a follow-up to a large-scale anti-terrorist raid against so-called Reich citizens in several federal states, Austria and Italy last December.
WDR, NDR and "Süddeutsche Zeitung" reported that there had been searches of 19 people in seven federal states and in Switzerland.
According to "Spiegel", 22 objects were searched throughout Germany.
In Reutlingen in Baden-Württemberg, an officer of a special task force was shot and slightly injured during a search.
According to dpa information, the official is stable and the perpetrator arrested.
"Reich citizens" are people who do not recognize the Federal Republic and its democratic structures.
The Office for the Protection of the Constitution assigned around 23,000 people to the scene of "Reichsbürger" and "Selbstverwalter" in Germany in 2022, 2,000 more than in the previous year.