The warning was described by officials as "credible but unconfirmed".
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Some reports suggest she may be receiving specialist treatment not yet available in India, but these are unconfirmed.
But there has been an unconfirmed report it was seen off Cornwall over the weekend on its way to the Atlantic.
The unconfirmed device looks fancy, but Apple has yet to explain how it can sell the iPad Mini when it already offers a device at every possible price point.
Ms Henderson's colleague Pol Callaghan said it was an "enabling bill" but as much of the detail remain unconfirmed, people were still "in the dark" about how the changes would affect them.
Some unconfirmed reports suggest that the cardinal has offered his resignation but the pope has refused to accept it.
There were some unconfirmed reports of glowing wreckage moving across the sky in western Canada, but Nasa said it had yet to receive credible evidence that this was so, less still that any debris items had been found.
There have been unconfirmed suggestions that applications have improved substantially since those falling figures last month, but not sufficient to rise much above last year.
It's a common (if unconfirmed) belief that the next iPhone will support LTE-based 4G, but the Wall Street Journal now understands through the ever-present "people familiar with the matter" that Apple is taking 4G worldwide.
Unconfirmed reports said two other unexploded devices were found near the end of the race but were safely defused.
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