Officials said Saturday that water contaminated with high levels of radiation had escaped into the sea from the Fukushima Daiichi nuclear power plant, media reports said.
The water reportedly leaked from a 20-centimetre crack at pit by reactor number 2 where cables are stored, the Kyodo News agency quoted the country's nuclear safety watchdog as saying, dpa reported.
The Nuclear and Industrial Safety Agency said the government wanted Tokyo Electric Power Co, the troubled plant's operator, to fill the crack with concrete as soon as possible.
"We will also check whether there are cracks at other reactors as soon as possible," said Hidehiko Nishiyama, spokesman for the agency.
Radioactive water leaked into sea, Japanese officials say
Officials said Saturday that water contaminated with high levels of radiation had escaped into the sea from the Fukushima Daiichi nuclear power plant, media reports said.