Protesters clashed with German police on Sunday as they tried to block a train carrying nuclear waste from France.
Officers used pepper spray and batons to disperse the 1,000 anti-nuclear activists camped on the tracks near Dannenberg, northern Germany.
Demonstrations were held throughout the weekend over the planned return of more than 100 tonnes of reprocessed waste to the northern town of Gorleben from Valognes in France.
When it reaches Dannenberg, the shipment will be loaded onto lorries for the final leg of its voyage.
Environmentalists have described it as “the most radioactive shipment in history”.
The protests have at times turned into running battles with numerous injuries on both sides.
Opinion polls suggest most Germans oppose the continued use of nuclear energy.
Chancellor Angela Merkel’s government recently decided to extend the lifespan of the country’s atomic power plants.