Atomic watchdog loses contact with SECOND Ukraine nuclear site: Captured Zaporizhzhia power station goes offline after it emerged Chernobyl could be just 48 HOURS from leaking radiation
• Warning systems at Zaporizhzhia power plant have stopped issuing updates
• IAEA chief Rafael Grossi said he was 'concerned about the sudden interruption'
• Earlier Ukraine said Chernobyl could be 48 hours away from leaking radiation
• State-run nuclear company Energoatom said it cannot cool spent nuclear fuel
• The spent fuel is stored away in metal containers cooled in a large pool of water
• But without electricity, the water cannot be kept at the necessary temperatures
• Electricity is also used to power ventilators, and for monitoring radiation levels
• Work to restore power has not been possible due to Russian control of plant
Nuclear safety watchdogs have lost contact with the captured Zaporizhzhia power plant, just hours after warning of a potential unfolding disaster at Chernobyl.
The International Atomic Energy Agency (IAEA) said warning systems at Zaporizhzhia had stopped broadcasting updates in the days since Russian forces shelled the site.
The announcement came after the watchdog said they had also lost touch with its systems that monitor nuclear material at the Chernobyl Nuclear Power Plant - two weeks after Russian forces took control of the site.
IAEA chief Rafael Grossi said he was 'concerned about the sudden interruption' of the data flows to the watchdog's Vienna headquarters.
He added that the reason for the disruption in updates was not clear but the IAEA was still receiving data from other nuclear facilities in Ukraine, including three other operational nuclear power plants.
Earlier Ukraine said Chernobyl could be 48 hours away from leaking radiation, and called on Russia to observe an urgent ceasefire to allow for repairs to be made.
The country's nuclear company Energoatom earlier warned that radioactive substances could be released if an electricity outage at the site continues any longer, as it makes it impossible to cool spent nuclear fuel.
Russian forces captured the plant and cut the power in the early days of the invasion.
It has not been possible to make repairs at the plant since, and the plant is currently running on emergency back-up generators that are powered by diesel.
The French government said it was in contact with the International Atomic Energy Agency (IAEA), and was urging Russia to co-operate.
'Reserve diesel generators have a 48-hour capacity to power the Chornobyl NPP,' Ukraine's Foreign Minister Dmytro Kuleba said in a warning on Twitter.
'After that, cooling systems of the storage facility for spent nuclear fuel will stop, making radiation leaks imminent.'
Energoatom has said that work to repair the connection and restore power to the plant - the site of the world's biggest nuclear disaster in 1996 - has not been possible because fighting is under way in the region.
The company said there were about 20,000 spent fuel assemblies at Chernobyl that could not be kept cool amid a power outage.
Their warming could lead to 'the release of radioactive substances into the environment. The radioactive cloud could be carried by wind to other regions of Ukraine, Belarus, Russia, and Europe,' it said in a statement.
Without power, ventilation systems at the plant would also not be working, exposing staff to dangerous doses of radiation, it added.