Japanese Prime Minister Fumio Kishida demanded an explanation from Beijing on Thursday about the fatal stabbing of a Japanese schoolboy in Shenzhen and urged China to ensure the safety of Japanese citizens.

China imposed a ban last year after Japan began releasing treated water from the Fukushima nuclear plant into the sea. They have agreed to expand monitoring of the water.

China and Japan reached an agreement over the discharge of wastewater from the wrecked Fukushima nuclear plant, the two governments said on Friday, paving the way for a restart of seafood shipments from Japan to China.

China had banned purchases of seafood originating in Japan citing risk of radioactive contamination after Tokyo Electric Power started releasing treated water from the wrecked Fukushima nuclear power plant into the Pacific Ocean last year.

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.