Analysis of information sources in references of the Wikipedia article "GRU (Soviet Union)" in English language version.
Other collateral sources reported that a group of Soviet military intelligence officers from the Sixth Directorate (responsible for Soviet SIGINT matters) of the Chief Intelligence Directorate (GRU) visited North Korea shortly after the seizure of the ship and inspected the vessel. Later, the North Koreans were reported to have turned over some of the captured equipment to the GRU. Apparently, some of this equipment was taken to Soviet radio plants in Kharkov, Voronezh, and Gorkij for examination by technicians.
Other collateral sources reported that a group of Soviet military intelligence officers from the Sixth Directorate (responsible for Soviet SIGINT matters) of the Chief Intelligence Directorate (GRU) visited North Korea shortly after the seizure of the ship and inspected the vessel. Later, the North Koreans were reported to have turned over some of the captured equipment to the GRU. Apparently, some of this equipment was taken to Soviet radio plants in Kharkov, Voronezh, and Gorkij for examination by technicians.
