By order of the Federal State Prosecutor's Office in northern Germany, the Netherlands and Switzerland, the apartments and offices of four people connected to the right were searched.
They, along with two other people who have already been arrested, are accused of forming the extreme right-wing group "Verwolf commando", which is believed to be able to carry out terrorist actions in Germany, according to German media.
The suspects are accused of having developed a secret electronic program in order to be able to communicate conspiratorially, the media reports.
The aim of the operation in northern Germany, in which about 50 police officers participated, is to seize plans and evidence against the suspects.
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