German police arrested two Belarusian nationals suspected of planning sabotage attacks in southern Germany, the Munich General Prosecutor’s Office said on Wednesday, according to the Straits Times, and Der Spiegel reported they were working on behalf of Russia.

The suspects planned to set fire to a building or critical infrastructure facility in the Nuremberg area, the prosecutor’s office said. Der Spiegel reported that Romanian authorities are also investigating the two men for suspected involvement in an arson attack on an industrial park in Brasov on the night of September 14, the site of a defense firm making grenade launchers and ammunition.