Police in northern Germany have raided homes and businesses belonging to two men suspected of stockpiling weapons and plotting to kill left-wing leaders.
"The suspects see the crisis they fear taking hold as an opportunity to capture left-wing political representatives and kill them with their weapons", the statement said.
A spokesman for the federal prosecutor's office said neither suspect had been arrested and no arrest warrant had been issued yet.
It was also reported that the police will soon raid the homes of others who talked with the suspects online, although they are not suspects.
Pictures on the website of the mass-circulation daily Bild showed black-clad police, some in balaclavas, carrying out searches.
The two men, one of whom is a policeman, are said to have created a hit list of names of left-leaning figures.
The suspected policeman worked in the eastern town of Ludwigslust, some 150km northwest of Berlin.
Disciplinary proceedings had also been initiated against the suspected policeman, said the regional interior ministry in Schwerin, the capital of the regional state of Mecklenburg-West Pomerania.
In a statement on Monday the German federal prosecutor said: "According to the results of the investigation so far, the two accused were in contact with different chat groups with other people", the statement said.