"It is likely that the level of radiation increased sharply due to a fire at Unit 4, " Edano said.
The unit was supposed to come back online one week earlier after being shut down for scheduled repairs March 26, but the schedule was impacted by a fire at Unit 3 of the plant.
Nuclear plant operators are battling to prevent meltdowns at three reactors, and Chief Cabinet Secretary Yukio Edano warned Sunday that a hydrogen explosion could occur at Unit 3 of the Fukushima No.1 nuclear power station.
FORBES: For An Accessible Explanation Of Japan's Nuclear Crisis, Watch 'The West Wing'
The bright yellow dome of the steel containment vessel at Unit 4, Fukushima Daiishi nuclear power plant (FDI) is clearly visible amid the pulverized remains of the building in a new video released by the Tokyo Electric Power Company.
FORBES: New Video From Fukushima Shows Containment Vessel Dome Amid Debris
The second stage of the review into safety at the unit will look at other areas where improvement may be necessary, including the way complaints from patients were handled at the unit and the completion of a review of patients' case notes over the last three years.
Their footage showed a van being loaded with furniture at a unit at an industrial estate in Preston, Lancashire, on 28 April 2008.
We had very little, maybe 10% of our assets, custodied at the brokerage unit at Smith Barney.
Cumbria Police are investigating a number of deaths of those who received care at the maternity unit at Barrow's Furness General Hospital.
First Minister Carwyn Jones will unveil the plans at the transplant unit at the University Hospital of Wales, Cardiff, on Tuesday morning.
Patients being treated at an acute unit at Hull Royal Infirmary are not receiving proper standards of care, the Care Quality Commission (CQC) has said.
Later, a Memorial Wall is to be consecrated and the Duke of Gloucester will present medals at the unit's base at Imjin Barracks in Innsworth.
One baby died from the infection at the neonatal unit in Altnagelvin Hospital in Londonderry in December 2011, and three in the neonatal unit at the Royal Jubilee Maternity Hospital in Belfast the following month.
Tests carried out at the Royal Liverpool Hospital and at the cardiothoracic unit at Broadgreen showed that the 54-year-old had a problem known as dissection of the aorta, which required 11 hours of emergency open-heart surgery.
That would lead to operations ending at the unit in Leeds, as well at Leicester's Glenfield Hospital and London's Royal Brompton.
BBC: Legal bid to save Leeds child heart surgery will go ahead
The research at the Spinal Repair Unit at UCL involved rats, not humans.
The healthy volunteers were testing an anti-inflammatory drug - TGN1412 - at a research unit based at Northwick Park Hospital when they suffered a severe reaction.
All ended up seriously ill, with multiple organ failure, soon after being injected with the drug at a special testing unit at Northwick Park Hospital in London, run by a company called Parexel.
Mr Fairley was injured himself while serving with 41 Commando Group and spent a year at the military rehabilitation unit at Headley Court, near Epsom, which has been a major beneficiary of the Help for Heroes charity.
BBC: Surrey sailor John Fairley raises funds for Help for Heroes
In 2007, Demis Hassabis, a research fellow at the Gatsby Computational Neuroscience Unit at University College London, and his colleagues published a study in the Proceedings of the National Academy of Sciences showing in five amnesiac patients an impoverished ability to imagine and describe future events.
WSJ: Memory: Research Finds Links Between Recall, Future Planning
"It blew us away, " Andrew Pressnell, a nurse at the unit, said of the dramatic increase.
Dr Christian Egeler, a consultant anaesthetist at the unit, said the technique was good for patients.
Social value starts at the unit of one: one person, one community, one product or service.
Patients at the unit were filmed by an undercover reporter posing as a care worker.
Behaviors are typically managed at the unit or subunit level, by division or department managers.
However, the Department of Health (DoH) said the NHS was right to investigate safety at the unit.
Ruth Smith, who had a child delivered at the unit, said the closure was a "real shame".
Even at the unit's lowest-quality audio level, listeners can't download an entire book or even most of one.
Operations were suspended from 28 March to 10 April, after concerns were raised about mortality figures at the unit.
BBC: Leeds heart unit: Government 'had no role in suspension'
Health officials said at least 150 births were needed at the unit each year to ensure it remains viable.
Thirty-two babies were born at the unit between April and September last year.
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