Prime Minister Fumio Kishida will meet with his ministers Tuesday to discuss when to release treated radioactive water from the crippled Fukushima No. 1 nuclear plant into the sea, a government source said Saturday, amid opposition from local fishermen and some neighboring countries.

Kishida will visit Fukushima Prefecture on Sunday to inspect the complex, he said Friday in Washington after holding a trilateral summit with the United States and South Korea.

"I believe we have reached the final stage where the government should make a decision based on comprehensive consideration" of issues such as minimizing the impact on fisheries as much as possible, he told reporters.