Japanese trade minister Hiroshige Seko has criticized South Korea's plan to tighten radiation checks on food products imported from Japan.
The South Korean government announced on Wednesday that starting Friday some items, including processed fishery products, will be checked twice, rather than the single check currently required.
The screening was first introduced following the Fukushima Daiichi nuclear plant accident in March 2011.
Asked about the suggestion that the stricter tests are a countermeasure against Japan's tighter controls on export to South Korea, Seko said that the step taken by Japan is part of export management and an internationally accepted administrative measure.
He added that Seoul's posture of spreading the matter to other areas is not desirable.
Seko also touched on South Korea's request for an explanation of Japan's plan to release water containing radioactive substances generated at the Fukushima Daiichi plant into the ocean.
He said the treatment of the water is still under discussion, and that the Japanese government has been briefing the South Korean embassy on the developments.
Seko added that Japan will continue to offer information not only to South Korea, but to the larger international community.