Japan’s prime minister has demanded an explanation from Beijing over the fatal stabbing of a schoolboy in the second knife attack on Japanese children in China in months.

In a call with China’s vice-foreign minister Sun Weidong on Thursday, Japan’s ambassador Kenji Kanasugi “strongly urged” Beijing to share detailed information about the incident, which was the second targeted attack on Japanese schoolchildren in China in recent months.

China will soon begin easing an import ban on all Japanese seafood, after alleviating concerns related to monitoring treated wastewater from the Fukushima Daiichi Nuclear Power Plant, officials said Friday.

Japan and China are making final preparations towards the resumption of imports by China of Japanese seafood and other marine products after regulatory monitoring of radioactive water was expanded, public broadcaster NHK reported on Friday.

China said Friday it would "gradually resume" importing seafood from Japan after imposing a blanket ban in August of last year over the release of water from the disabled Fukushima nuclear plant. "China will begin to adjust the relevant measures based on scientific evidence and gradually resume imports of Japanese aquatic products that meet the regulation requirements and standards,