German officials say that Russia is to remove large quantities of enriched uranium from the Soviet-era atomic reactor in former East Germany.
Police said Sunday that more than 300 kilograms of nuclear waste, produced in the Rossendorf reactor near the city of Dresden, was to be flown out of Germany overnight.
Germans shut down the Soviet-built research reactor soon after reunification in 1990.
The waste is to be treated in Russia under an international agreement aimed at preventing proliferation of nuclear material.
Representatives of U.N. Vienna-based International Atomic Energy Agency were to observe loading of the nuclear waste into aircraft at the Dresden airport.
Some information for this report was provided by AFP and Reuters.