China will revisit its ban on marine imports from Japan and work towards resuming imports following an expansion of regulatory monitoring of radioactive wastewater from the Fukushima nuclear plant, Japan's Prime Minister Fumio Kishida said on Friday.

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.