Israel has conducted an air strike in Syria, apparently targeting a building, according to CNN, although there has not yet been any official confirmation.
The network said US officials did not believe Israel had targeted a chemical weapons facility. CBS News cited US sources as saying Israel targeted a warehouse.
But Syrian UN Ambassador Bashar Ja'afari told Reuters, "I'm not aware of any attack right now."
A White House spokeswoman referred questions on the CNN report to the Israeli government.
The Pentagon declined comment.
In Jerusalem, a Israeli military spokeswoman declined to comment.
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A judge has said doctors at Alder Hey Children’s Hospital could stop providing life-support treatment to the 23-month-old.
Images of the Duke and Duchess of Cambridge, with Kate cradling the young prince in her arms, feature on nearly all the front pages.
A family spokesman said the 93-year-old is “responding to treatments and appears to be recovering”.