A top German official accused the United States on Sunday of using "Cold War" methods against its allies, after a German magazine cited secret intelligence documents to claim that U.S. spies bugged European Union offices.

Justice Minister Sabine Leutheusser-Schnarrenberger was responding to a report by German news weekly Der Spiegel, which claimed that the U.S. National Security Agency eavesdropped on EU offices in Washington, New York and Brussels. The magazine cited classified U.S. documents taken by former NSA contractor Edward Snowden that it said it had partly seen.