Japan's Foreign Minister Toshimitsu Motegi says the government will clearly explain its plans for disposing of radioactive wastewater building up at the damaged Fukushima Daiichi nuclear plant.
Motegi made the comment after South Korea and Japan expressed opposing views on treatment of the wastewater at a general meeting of the International Atomic Energy Agency in Vienna on Monday.
South Korea's delegation cited increasing fears that the water will be discharged into the sea, and said Japan lacks transparency.
Motegi told reporters on Tuesday that the government is still considering the next course of action.
He added that Japanese delegation countered South Korea's claim by saying it received a positive report from the nuclear watchdog.
Motegi urged South Korea to make its claims based on facts and scientific evidence.
Wastewater from the reactors damaged by the March 2011 earthquake and tsunami is cleared of most radioactive substances except tritium.
Last week, Japan's then environment minister broached the idea of releasing wastewater into the sea to stop its buildup, drawing criticism from fishing industries.
On Tuesday, Osaka City Mayor Ichiro Matsui told reporters he's willing to release water into Osaka Bay on condition that it is scientifically confirmed safe. Matsui suggested wastewater that's not an environmental hazard should be disposed of across Japan.