New Orleans police said nobody has been arrested after a shooting during a Mother's Day parade that left at least 12 injured, according to the Associated Press.
The incident happened at about 2pm local time (8pm BST) with 200 people at the event when gunfire erupted.
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Harry and Meghan left Windsor Castle during Sunday afternoon after being hosted by the Queen and Duke of Edinburgh over the weekend.
Clare Waight Keller said it was an "enormous honour" to have been given one of fashion's most coveted jobs ahead of the royal wedding.
As temperatures rise over the coming few days, the risk of thunderstorms across some southern parts