At Stalin's order, the NKVD instructed one of its agents, Nikolai Skoblin, to concoct information suggesting a plot by Tukhachevsky and the other Soviet generals against Stalin and pass it to Reinhard Heydrich, chief of the German "Sicherheitsdienst" intelligence arm. Seeing an opportunity to strike a blow at both the Soviet Union and his archenemy Wilhelm Canaris of the German Abwehr, Heydrich immediately acted on the information and undertook to improve on it, forging a series of documents implicating Tukhachevsky and other Red Army commanders; these were later passed to the Soviets via Edvard Beneš and other neutral parties. Stalin's archives indeed contain a number of messages received during the 1920 and 1930s duly reporting the possible involvement of Tukhachevsky with the "German Nazi leadership".