Tokyo has urged Beijing to “ensure the safety of Japanese residents in China” after a wave of telephone harassment targeting businesses in Japan sparked by the controversial discharge of Fukushima wastewater.

While Japan insists the release of the treated water is safe - a view backed by the UN’s nuclear watchdog - China has staunchly opposed it and banned all Japanese seafood imports, saying it contaminates the ocean.

The Japanese government on Sunday (Aug 27) published new data showing waters off Fukushima continued to post radioactivity levels well within safe limits.