In Japan work to clean up the radioactive water at the stricken Fukushima nuclear power plant has been suspended just hours after it started.
A statement from the Tokyo Electric Power Company – Tepco – which is running the operation said the work has stopped due to a sharp rise in radiation in a part of the system intended to absorb the chemical caesium.
The action was started after fears that pools of radioactive water were in danger of spilling into the sea.
Officials said it was critical to deal with the water, over 100,000 tons the equivalent of 40 Olympic swimming pools. They hope to resume the work within a week.
Its not clear what has caused the rise in the radiation levels. Tepco say despite this delay plans are on course to bring the plant fully under control by the end of the year. The Fukushima plant was disabled by the earthquake and tsunami which struck on March 11th.